{"title":"MerCruiser 120HP GM 153 CID Sterndrive","description":"\u003cdiv class=\"model-catalog\"\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/mercruiser-gas-engines-sterndrive\"\u003eBack to MerCruiser Gas Engines Sterndrive\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eSelect a model, production range or part section to narrow your search.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/mercruiser-120hp-gm-153-cid-sterndrive-0b531854-thru-0c856558\"\u003eMerCruiser 120HP GM 153 CID Sterndrive — 0B531854 THRU 0C856558\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/mercruiser-120hp-gm-153-cid-sterndrive-6229718-thru-0b531853\"\u003eMerCruiser 120HP GM 153 CID Sterndrive — 6229718 THRU 0B531853\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMatch the model and any listed year, serial number and configuration before choosing a part.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"70981a3-3-inch-upper-exhaust-bellows-for-mercruiser-sterndrives","title":"70981A3 3-Inch Upper Exhaust Bellows for MerCruiser Sterndrives","description":"\u003cdiv style=\"width:100%;max-width:960px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#293a35;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n  \u003csection style=\"padding:28px 24px;margin:0 0 40px;border-top:5px solid #234d40;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003cp style=\"margin:0 0 14px;color:#456052;font-size:12px;line-height:1.6;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;\"\u003eSERDAMARINE \/ MARINE EXHAUST PARTS\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 18px;color:#203e32;font-family:Georgia,Times,serif;font-size:clamp(25px,4vw,34px);font-weight:400;line-height:1.25;\"\u003eUpper Exhaust Bellows (3-Inch Upper Version for MerCruiser Exhaust Arrangements)\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis upper 3-inch exhaust bellows, referenced to Mercury 70981A3, serves MerCruiser sterndrive exhaust connections using a 3-inch center-mounted riser to a 4-inch elbow or a rear-mounted riser to a 4-inch Y-pipe. Applications cover specified MerCruiser models including 470\/485, 898, 228, 250, 260, 280, 330, Ford 233, V8 (1971–1982), and V6 \u0026amp; V8 installations when matched to these riser, elbow, and Y-pipe arrangements.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eConfiguration \u0026amp; Specifications\u003c\/h2\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eComponent Position \u0026amp; Version\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eUpper 3-inch exhaust bellows (distinct from the upper 4-inch version and lower 3-inch exhaust tube)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eSupported Exhaust Arrangements\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e3\" (3-inch) center-mounted riser to 4\" (4-inch) elbow; or rear-mounted riser to 4\" (4-inch) Y-pipe\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eEngine Applications\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eSelect this upper exhaust bellows by matching the actual riser, elbow, and Y-pipe arrangement rather than relying on engine family alone. On old-style Model 120\/140 applications, check whether the exhaust elbow is a one-piece or two-piece design before selecting the connection part.\u003c\/p\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Stern Drive Models 470\/485, 898, 228, 250, 260, 280, 330 and Ford 233\u003c\/strong\u003e — Upper exhaust bellows application for matching exhaust connections (3-inch center-mounted riser to 4-inch elbow, or rear-mounted riser to 4-inch Y-pipe).\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Stern Drive V8 (1971–1982), V6 \u0026amp; V8\u003c\/strong\u003e — Applicable when equipped with a 3\" center-mounted riser to a 4\" elbow, or a rear-mounted riser to a 4\" Y-pipe.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch3 style=\"margin:24px 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eApplication Check Required\u003c\/h3\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eOld-Style Model 120\/140 Application\u003c\/strong\u003e — Check whether the exhaust elbow is one-piece or two-piece and verify the connection position and part reference.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eConfirm application\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003ch3 style=\"font-size:17px;margin:20px 0 10px;color:#143b31;\"\u003eAdditional model-specific applications\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;line-height:1.7;\"\u003e\u003cli\u003eMerCruiser 175-205, V6; GM 229\/262 CID; wet-joint exhaust; upper 3-inch bellows for GLM 51110 exhaust elbow, OEM 98504A3.\u003c\/li\u003e\u003c\/ul\u003e\u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eReference Numbers\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThese numbers serve as identification references only and do not by themselves establish universal interchangeability or manufacturer identity. Compare the reference number and connection position carefully, as alternate exhaust connection sizes and positions are listed below for comparison.\u003c\/p\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eOEM Reference (Upper 3-Inch Version)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eMercury \/ Mercury Mariner: 70981A3, 70981A 3, 70981\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAftermarket References (Upper 3-Inch Version)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eGLM: 89070; Sierra \/ Sierra Marine: 18-2762; OBR \/ OBR Red Rhino: MR-508; Mallory \/ Mallory Marine: 9-72808; RECMAR: REC70981A3\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eDifferent Configuration Comparison (Not This Part)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e\n            Upper 4-inch version: Mercury \/ Mercury Mariner \/ MerCruiser Stern \/ Out Drive 32-44348001, GLM 89120\u003cbr\u003e\n            Lower 3-inch exhaust tube: Mercury \/ Mercury Mariner \/ MerCruiser Stern \/ Out Drive 32-90949T, GLM 89090\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAdditional Listed Reference Numbers\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e\n            Mercury Mariner \/ MerCruiser Stern \/ Out Drive: 32-4434001\u003cbr\u003e\n            GLM: 01080, 01100\u003cbr\u003e\n            Unassigned brand references: 70981B3, 872531, 54-815504372\n          \u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eSupplied Parts\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eUpper Exhaust Bellows\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eService \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGeneral service guidance only. Use the service manual for your exact engine and exhaust configuration.\u003c\/p\u003e\n    \u003col style=\"margin:0;padding-left:22px;list-style-type:decimal;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eAllow the engine and exhaust components to cool completely, shut off the engine, and disconnect the battery or disable the ignition to prevent accidental starting during work.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eVerify the existing exhaust layout—specifically checking whether your setup uses a 3-inch center-mounted riser to a 4-inch elbow or a rear-mounted riser to a 4-inch Y-pipe, and confirming that the upper 3-inch bellows is at the service position.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eInspect the mating necks on the riser, elbow, or Y-pipe before fitting the replacement bellows, keeping the clamping and sealing surfaces clean and undamaged.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eSeat and secure the bellows according to the OEM service manual for your exact sterndrive exhaust arrangement; if any abnormal exhaust odor or leakage occurs during subsequent operation, stop the engine immediately and inspect the connection.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eQuestions Before Replacement\u003c\/h2\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eHow does this upper bellows differ from Mercury 32-44348001 and 32-90949T?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eThis part (referenced to Mercury 70981A3 \/ GLM 89070) is the upper 3-inch exhaust bellows for a 3-inch center-mounted riser to a 4-inch elbow or a rear-mounted riser to a 4-inch Y-pipe. Mercury 32-44348001 (GLM 89120) identifies a separate upper 4-inch version, while Mercury 32-90949T (GLM 89090) identifies a separate lower 3-inch exhaust tube.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eWhat needs to be checked on an old-style MerCruiser Model 120\/140?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eOn the old-style Model 120\/140 application, inspect whether the exhaust elbow is a one-piece or two-piece design and match the exact connection position to the part reference.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"Serdamarine","offers":[{"title":"Default Title","offer_id":45165055967283,"sku":"17B1014","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/2930\/4115\/files\/marine-exhaust-part-17b4c90583f64caf.png?v=1792733411"},{"product_id":"8m0067654-exhaust-water-shutter-for-mercruiser-140-3-0l-v8-tdi-4-2l","title":"8M0067654 Exhaust Water Shutter for MerCruiser 140 3.0L V8 TDI 4.2L","description":"\u003cdiv style=\"width:100%;max-width:960px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#293a35;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n  \u003csection style=\"padding:28px 24px;margin:0 0 40px;border-top:5px solid #234d40;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003cp style=\"margin:0 0 14px;color:#456052;font-size:12px;line-height:1.6;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;\"\u003eSERDAMARINE \/ MARINE EXHAUST PARTS\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 18px;color:#203e32;font-family:Georgia,Times,serif;font-size:clamp(25px,4vw,34px);font-weight:400;line-height:1.25;\"\u003eExhaust Water Shutter for MerCruiser Stern \/ Out Drive Applications\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis aftermarket exhaust water shutter (flapper valve) is an individual service component corresponding to Mercury Marine reference 8M0067654, rather than a complete exhaust manifold assembly. It is intended for exhaust water shutter replacement on MerCruiser 140, 3.0L, 3.0LX, V8, and TDI 4.2L (335, 370 MCM \/ MIE) applications.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eEngine Applications\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eUse the exact engine model and exhaust shutter part reference to distinguish similar versions; do not select a shutter solely because it is described for a MerCruiser V8 engine.\u003c\/p\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Stern \/ Out Drive — 140 \/ 3.0L \/ 3.0LX\u003c\/strong\u003e\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified — Match the engine configuration and exhaust shutter reference.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Stern \/ Out Drive — V8\u003c\/strong\u003e\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified — Match the exact engine model and exhaust shutter part reference; do not select solely by V8 engine description.\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Stern \/ Out Drive — TDI 4.2L (335, 370 MCM \/ MIE)\u003c\/strong\u003e\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified — Match the engine configuration and exhaust shutter reference.\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eReference Numbers\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThe numbers below are provided as identification references for part selection and do not alone confirm interchangeability or manufacturer identity.\u003c\/p\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMercury Marine \/ Mercury Mariner\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e8M0067654, 60930\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eSierra Marine\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e18-2727\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMallory Marine\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e9-42800\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eGLM\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e89165\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eRECMAR\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eREC60930\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAdditional Reference\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e25-43809\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eSupplied Parts\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eExhaust water shutter\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eService \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGeneral service guidance only. Use the service manual for your exact engine and exhaust configuration.\u003c\/p\u003e\n    \u003col style=\"margin:0;padding-left:22px;list-style-type:decimal;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eEnsure the engine is shut off, completely cool, and secured against accidental starting before opening any exhaust components.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eRemove the necessary exhaust passage connections to access the existing water shutter and inspect the internal mounting area for leftover debris or wear.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003ePosition the replacement exhaust water shutter in the orientation specified by your engine service manual and verify that the flapper moves freely without binding.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eReassemble the exhaust connections according to manual procedures; if abnormal exhaust noise or leakage occurs during operation, stop the engine immediately and inspect the assembly.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;padding:24px;border-top:1px solid #bdc9c0;border-bottom:1px solid #bdc9c0;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eThe Serdamarine Approach\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eExhaust parts need a configuration match. Serdamarine focuses on marine exhaust manifolds and their related service parts. Application details, connection requirements and public reference numbers are presented together to support part selection.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eQuestions Before Replacement\u003c\/h2\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eCan this shutter be selected for any MerCruiser V8 engine without checking part numbers?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eNo. Similar exhaust versions exist across MerCruiser V8 engines, so selection must be based on the exact engine model and matching exhaust shutter reference numbers such as 8M0067654 or 60930.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"Serdamarine","offers":[{"title":"Default Title","offer_id":45165058261043,"sku":"17ST001","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/2930\/4115\/files\/marine-exhaust-part-5f944d1f21261376.jpg?v=1792733632"},{"product_id":"27-99777-2-rear-riser-open-exhaust-elbow-gasket-set-for-mercruiser","title":"27-99777-2 Rear Riser Open Exhaust Elbow Gasket Set for MerCruiser","description":"\u003cdiv style=\"width:100%;max-width:960px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#293a35;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n  \u003csection style=\"padding:28px 24px;margin:0 0 40px;border-top:5px solid #234d40;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003cp style=\"margin:0 0 14px;color:#456052;font-size:12px;line-height:1.6;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;\"\u003eSERDAMARINE \/ MARINE EXHAUST PARTS\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 18px;color:#203e32;font-family:Georgia,Times,serif;font-size:clamp(25px,4vw,34px);font-weight:400;line-height:1.25;\"\u003eRear Riser Open Exhaust Elbow Gasket Set (2 Pieces)\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis two-piece rear-riser open exhaust elbow gasket set seals the joint between the exhaust manifold and the exhaust elbow or adaptor on listed MerCruiser 4-cylinder, 6-cylinder, and V8 engines, referencing OEM number 27-99777-2. It is configured specifically for open-passage rear-riser joints and is distinct from the closed-cooling blocking-gasket configuration referenced under 27-92720 or GLM 32630.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eConfiguration \u0026amp; Specifications\u003c\/h2\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eJoint Location\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eExhaust manifold to exhaust elbow or adaptor (rear-riser exhaust assembly)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003ePassage Configuration\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eOpen gasket pattern\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eExcluded Configuration\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eNot the closed-cooling blocking-gasket version referenced as MerCruiser 27-92720 \/ GLM 32630\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eEngine Applications\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis gasket set fits listed MerCruiser applications equipped with a rear-riser exhaust manifold-to-elbow or adaptor joint using the open-gasket pattern. Verify that your assembly requires the open passage rather than a blocking gasket; on 2.5L and 3.0L engines from 1983–1994, check the installed exhaust-joint configuration directly before ordering.\u003c\/p\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 4-Cylinder and 6-Cylinder (except 120 hp)\u003c\/strong\u003e — Years: 1968–1982. Rear riser exhaust manifold to elbow or adaptor joint with open gasket pattern.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser All V8\u003c\/strong\u003e — Years: 1978–1982. Rear riser exhaust manifold to elbow or adaptor joint with open gasket pattern.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Model 140\u003c\/strong\u003e — Inline 4, GM 181 CID, 4-Cylinder. Years: 1968–1982. Rear riser exhaust manifold to elbow or adaptor joint with open gasket pattern.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Model 120 \/ 140\u003c\/strong\u003e — Inline 4, 153 \/ 181 CID, 4-Cylinder. Years: 1982–1995. Rear riser exhaust manifold to elbow or adaptor joint with open gasket pattern.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser Model 3.0L \/ 3.0LX\u003c\/strong\u003e — Inline 4, GM 181 CID, 4-Cylinder. Years: 1990 and up. Rear riser exhaust manifold to elbow or adaptor joint with open gasket pattern.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 2.5L\u003c\/strong\u003e — Years: 1983–1994. Rear riser exhaust manifold to elbow or adaptor joint; confirm installed open-gasket exhaust-joint configuration.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 3.0L\u003c\/strong\u003e — Years: 1983–1994. Rear riser exhaust manifold to elbow or adaptor joint; confirm installed open-gasket exhaust-joint configuration.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003cdiv style=\"margin:18px 0 0;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eNot Suitable For\u003c\/h3\u003e\n      \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n        \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n          \u003cstrong\u003eMerCruiser 120 hp (within 1968–1982 4\/6-Cylinder group)\u003c\/strong\u003e — Excluded from the 1968–1982 4\/6-Cylinder application range.\n          \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eNot suitable\u003c\/span\u003e\n        \u003c\/li\u003e\n        \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n          \u003cstrong\u003eClosed-Cooling Blocking-Gasket Assemblies (MerCruiser 27-92720 \/ GLM 32630)\u003c\/strong\u003e — Assemblies requiring a blocking gasket rather than an open passage gasket.\n          \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eNot suitable\u003c\/span\u003e\n        \u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003ch3 style=\"font-size:17px;margin:20px 0 10px;color:#143b31;\"\u003eAdditional model-specific applications\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;line-height:1.7;\"\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 1968–1982; except 120 HP; rear-riser open gasket at the exhaust manifold-to-elbow or adaptor joint.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1968–1982; except 120 HP; rear-riser open gasket at the exhaust manifold-to-elbow or adaptor joint.\u003c\/li\u003e\n\u003cli\u003eMerCruiser all V8 applications, 1978–1982; rear-riser open gasket; specific V8 models are not individually identified.\u003c\/li\u003e\n\u003cli\u003eMerCruiser MODEL 3.0LX, from 1990 onward; inline 4, GM 181 CID; confirm rear-riser open-gasket exhaust configuration.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 2.5L application, 1983–1994; exhaust manifold gasket set application; confirm rear-riser open-gasket joint. Cylinder configuration and model code not specified.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 3.0L application, 1983–1994; exhaust manifold gasket set application; confirm rear-riser open-gasket joint. Cylinder configuration not specified in this sales-note statement.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1968; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1969; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1970; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1971; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1972; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1973; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1974; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1975; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1976; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1977; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1978; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1979; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1980; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1981; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4-cylinder applications, 120 HP, 1982; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 120 HP, 1968; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 120 HP, 1969; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 120 HP, 1970; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 120 HP, 1971; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 120 HP, 1972; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1973; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1974; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1975; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1976; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1977; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1978; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1979; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1980; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1981; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder applications, 1982; Excluded: 1968–1982 4\/6-cylinder applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eReference Numbers\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThe numbers below are provided for part identification and cross-reference only; they do not alone guarantee interchangeability across different joint configurations or indicate manufacturer identity.\u003c\/p\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMerCruiser OEM References\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e27-99777-2, 27-997772, 27-99777Q02, 99777Q02, 997771, 99777B2, 27-997771, 27-99777B2, 27-52076, 52076\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMercury Mariner Reference\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e27-99777\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eOMC Reference\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e0508615\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eSierra Aftermarket References\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e18-2833, 18-2833-9\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eGLM Aftermarket References\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eGLM31520, 31520\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eRECMAR Aftermarket Reference\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eREC27-99777Q02\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eDifferent Configuration Comparison (Not Interchangeable)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eMerCruiser 27-92720, GLM 32630 (Closed-cooling blocking-gasket version; not replaceable by this open gasket)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eSupplied Parts\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003e2 × Rear-riser open exhaust elbow gaskets\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eService \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGeneral service guidance only. Use the service manual for your exact engine and exhaust configuration.\u003c\/p\u003e\n    \u003col style=\"margin:0;padding-left:22px;list-style-type:decimal;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eEnsure the engine is shut off, completely cool, and secured against accidental starting before servicing any exhaust components.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eSupport the exhaust elbow or adaptor during disassembly and carefully clean both mating surfaces on the manifold and elbow\/adaptor without gouging the sealing planes.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eCompare the new open gasket directly against the removed gasket and the casting passages to verify that an open-passage pattern is required rather than a blocking gasket.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003ePosition the gasket and tighten the mounting fasteners according to the sequence and specifications in your engine service manual. If any abnormal leakage or temperature issue occurs during operation, shut down the engine immediately and inspect the joint.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;padding:24px;border-top:1px solid #bdc9c0;border-bottom:1px solid #bdc9c0;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eThe Serdamarine Approach\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eExhaust parts need a configuration match. Serdamarine focuses on marine exhaust manifolds and their related service parts. Application details, connection requirements and public reference numbers are presented together to support part selection.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eQuestions Before Replacement\u003c\/h2\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eCan this gasket replace MerCruiser 27-92720 or GLM 32630?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eNo. This set provides the open-gasket pattern associated with MerCruiser 27-99777-2 and GLM 31520. It is not a substitute for the closed-cooling blocking-gasket version referenced as MerCruiser 27-92720 or GLM 32630.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eHow does this apply to 120 hp and 140 hp 4-cylinder models?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eWithin the 1968–1982 4\/6-cylinder group, 120 hp models are excluded while Model 140 (GM 181 CID) is included. For the later 1982–1995 inline 4 range (153\/181 CID), both Model 120 and Model 140 are listed when equipped with the rear-riser open-gasket manifold-to-elbow or adaptor joint.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"Serdamarine","offers":[{"title":"Default Title","offer_id":45171575029811,"sku":"24GK061*2","price":14.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/2930\/4115\/files\/marine-exhaust-part-4bb16baa9ffc975d.png?v=1792750255"},{"product_id":"27-99777-2-open-rear-riser-exhaust-elbow-gasket-for-mercruiser","title":"27-99777-2 Open Rear-Riser Exhaust Elbow Gasket for MerCruiser","description":"\u003cdiv style=\"width:100%;max-width:960px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#293a35;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n  \u003csection style=\"padding:28px 24px;margin:0 0 40px;border-top:5px solid #234d40;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003cp style=\"margin:0 0 14px;color:#456052;font-size:12px;line-height:1.6;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;\"\u003eSERDAMARINE \/ MARINE EXHAUST PARTS\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 18px;color:#203e32;font-family:Georgia,Times,serif;font-size:clamp(25px,4vw,34px);font-weight:400;line-height:1.25;\"\u003eExhaust Manifold-to-Elbow Gasket — Rear Riser, Open Type\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThis aftermarket open-type gasket seals the joint between the exhaust manifold and the exhaust elbow or adaptor on rear-riser MerCruiser Stern \/ Out Drive installations referenced under 27-99777-2, including specified 4\/6-cylinder (1968–1982, except 120 hp), V8 (1978–1982), Model 120\/140 inline-4, and 2.5L \/ 3.0L \/ 3.0LX series engines.\u003c\/p\u003e\n    \u003cp style=\"margin:0;\"\u003eIt is the open rear-riser configuration and differs from the closed-cooling gasket version referenced as MerCruiser 27-92720 or GLM 32630.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eConfiguration \u0026amp; Specifications\u003c\/h2\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eJoint Location\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eExhaust manifold to exhaust elbow or adaptor\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eRiser Position\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eRear riser\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eGasket Flow Configuration\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eOpen type (distinct from the closed-cooling version referenced under MerCruiser 27-92720 \/ GLM 32630)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eEngine Applications\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eSelect this gasket by matching both the engine application and the open rear-riser manifold-to-elbow or adaptor joint configuration rather than relying on engine displacement alone.\u003c\/p\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 4\/6-Cyl. (except 120 hp)\u003c\/strong\u003e — Years: 1968–1982. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser All V8\u003c\/strong\u003e — Years: 1978–1982. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser MODEL 140 — INLINE 4, GM 181 CID, 4-CYL.\u003c\/strong\u003e — Years: 1968–1982. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser MODEL 120\/140 — INLINE 4, 153\/181 CID, 4-CYL.\u003c\/strong\u003e — Years: 1982–1995. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint. For a 1982 Model 120, verify the actual manifold\/elbow version and required gasket number, as 1968–1982 120 hp applications are excluded.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 2.5L\u003c\/strong\u003e — Years: 1983–1994. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 3.0L\u003c\/strong\u003e — Years: 1983–1994. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser MODEL 3.0LX \/ 3.0L — INLINE 4, GM 181 CID, 4-CYL.\u003c\/strong\u003e — Years: 1990 \u0026amp; up. Position and configuration: Rear riser, open-type gasket at the exhaust manifold to elbow or adaptor joint. Verify the installed exhaust-joint version on 1990-onward engines, as the model name alone does not identify later design changes.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eFits when specified\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch3 style=\"margin:24px 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eNot Suitable For\u003c\/h3\u003e\n    \u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eMerCruiser 4-Cyl. 120 hp (1968–1982)\u003c\/strong\u003e — Excluded from the 1968–1982 4\/6-cylinder application range; for a 1982 Model 120 transition year, check the installed manifold\/elbow version and part number.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eNot suitable\u003c\/span\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003e\n        \u003cstrong\u003eClosed-Cooling Joint Applications Calling for MerCruiser 27-92720 or GLM 32630\u003c\/strong\u003e — Requires the closed-cooling gasket configuration rather than this open-type rear-riser gasket.\n        \u003cspan style=\"display:block;margin:6px 0 0;color:#59421f;font-size:13px;font-weight:700;\"\u003eNot suitable\u003c\/span\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003ch3 style=\"font-size:17px;margin:20px 0 10px;color:#143b31;\"\u003eAdditional model-specific applications\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;line-height:1.7;\"\u003e\n\u003cli\u003eMerCruiser 4-cylinder engines, 1968–1982; rear-riser open manifold-to-elbow\/adaptor gasket application, excluding 120 HP engines.\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6-cylinder engines, 1968–1982; rear-riser open manifold-to-elbow\/adaptor gasket application, excluding 120 HP engines.\u003c\/li\u003e\n\u003cli\u003eMerCruiser All V8 engines, 1978–1982; rear-riser open manifold-to-elbow\/adaptor gasket. Individual models and horsepower are not specified.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eReference Numbers\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThe numbers below are provided for part identification and cross-reference only; they do not indicate that this aftermarket part was manufactured by the referenced brands, and numbers for other joint configurations are separated below.\u003c\/p\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMerCruiser Stern \/ Out Drive Reference Numbers (Open Rear-Riser)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e27-99777-2, 27-997772, 27-99777Q02, 99777Q02, 997771, 99777B2, 27-997771, 27-99777B2, 27-52076, 52076\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMercury Mariner Reference Number\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e27-99777\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eOMC Reference Number\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e0508615\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAftermarket Reference Numbers (Open Rear-Riser)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eSierra: 18-2833, 18-2833-9; GLM: GLM31520, 31520; RECMAR: REC27-99777Q02\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eDifferent Configuration Comparison — Closed-Cooling Version (Not Interchangeable)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eMerCruiser Stern \/ Out Drive: 27-92720; GLM: 32630\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAdditional Catalog Comparison Numbers (Unconfirmed Relationship)\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eMerCruiser Stern \/ Out Drive: 27-39915; GLM: 31410 (listed in catalog comparison records; not confirmed as direct replacements for the open rear-riser 27-99777-2 gasket)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eSupplied Parts\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003e4 × Exhaust manifold-to-elbow gasket (rear riser, open type)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eService \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGeneral service guidance only. Use the service manual for your exact engine and exhaust configuration.\u003c\/p\u003e\n    \u003col style=\"margin:0;padding-left:22px;list-style-type:decimal;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eShut off the engine, allow all exhaust components to cool completely, and disconnect the battery to prevent accidental cranking before loosening the elbow or adaptor hardware.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eSupport the exhaust elbow or adaptor during removal and installation so its weight does not damage the manifold sealing surfaces or threads.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eClean old gasket material from both the manifold and the elbow or adaptor mating faces while protecting the machined surfaces from gouges, and verify that the passage layout matches the open rear-riser gasket.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eAlign the new gasket with all bolt holes and passages, then tighten the fasteners to the sequence and specification listed in your engine service manual; stop operation immediately and inspect the joint if any exhaust or water leak is detected during initial run-up.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;padding:24px;border-top:1px solid #bdc9c0;border-bottom:1px solid #bdc9c0;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eThe Serdamarine Approach\u003c\/h2\u003e\n    \u003cp style=\"margin:0;\"\u003eExhaust parts need a configuration match. Serdamarine focuses on marine exhaust manifolds and their related service parts. Application details, connection requirements and public reference numbers are presented together to support part selection.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eQuestions Before Replacement\u003c\/h2\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eHow does 27-99777-2 differ from MerCruiser 27-92720 or GLM 32630?\u003c\/h3\u003e\n      \u003cp style=\"margin:0;\"\u003eMerCruiser 27-99777-2 (and GLM 31520) identifies the open-type rear-riser gasket for the exhaust manifold-to-elbow or adaptor joint. If your joint specifies MerCruiser 27-92720 or GLM 32630, it requires the closed-cooling gasket version instead.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eWhy is the 1982 Model 120 listed in both the excluded and applicable ranges?\u003c\/h3\u003e\n      \u003cp style=\"margin:0;\"\u003eThe 1968–1982 4\/6-cylinder application group excludes 120 hp models, while the Model 120\/140 (153\/181 CID, inline-4) group spans 1982–1995. On a 1982 Model 120, match the installed manifold\/elbow version and original gasket reference number.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eCan I select this gasket for a 1990-onward 3.0L or 3.0LX by model name alone?\u003c\/h3\u003e\n      \u003cp style=\"margin:0;\"\u003eNo. For Model 3.0L and 3.0LX (GM 181 CID inline-4) engines from 1990 onward, the engine model name does not identify later exhaust-joint design changes; match the installed rear-riser manifold-to-elbow joint version and part reference 27-99777-2 \/ 27-99777Q02.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"Serdamarine","offers":[{"title":"Default Title","offer_id":45171991707699,"sku":"24GK061*4","price":21.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/2930\/4115\/files\/marine-exhaust-part-94238d414053742a.png?v=1792755108"},{"product_id":"16951q1-brass-cooling-drain-plug-for-mercruiser-1-4-npt","title":"16951Q1 Brass Cooling Drain Plug for MerCruiser 1\/4 NPT","description":"\u003cdiv style=\"width:100%;max-width:960px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#293a35;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n  \u003csection style=\"padding:28px 24px;margin:0 0 40px;border-top:5px solid #234d40;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003cp style=\"margin:0 0 14px;color:#456052;font-size:12px;line-height:1.6;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;\"\u003eSERDAMARINE \/ MARINE EXHAUST PARTS\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 18px;color:#203e32;font-family:Georgia,Times,serif;font-size:clamp(25px,4vw,34px);font-weight:400;line-height:1.25;\"\u003e16951Q1 Brass Cooling Drain Plug for MerCruiser 1\/4 NPT\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eAftermarket brass cooling-system drain plug referenced to Mercury 16951Q1 for compatible GM-based MerCruiser engine-block and manifold ports. It uses a 1\/4-inch NPT thread; compare the original reference and port specification.\u003c\/p\u003e\u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eConfiguration \u0026amp; Specifications\u003c\/h2\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eComponent Function\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eCooling-system drain plug \/ bleed screw\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eThread Specification\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e1\/4\" NPT\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMaterial\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eBrass\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eInstallation Location\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eCompatible GM cylinder block or exhaust manifold cooling-system drain and bleed ports\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eEngine Applications\u003c\/h2\u003e\n\u003cul style=\"padding-left:20px;line-height:1.75;\"\u003e\u003cli\u003eMerCruiser GM-based sterndrive or inboard engine block \/ manifold cooling-system drain or bleed port; 1\/4-inch NPT, brass.\u003c\/li\u003e\u003c\/ul\u003e\u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eReference Numbers\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eThe numbers below are provided for part identification and cross-reference only; they do not establish manufacturer identity or guarantee interchangeability without matching port thread and location.\u003c\/p\u003e\n    \u003ctable style=\"width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eMercury \/ Mariner OEM References\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e16951A1, 16951T1, 16951Q1, 22-16951Q1, 22-16951A1, 22-16951T1, 22-64426, 22-87238\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eOMC OEM Reference\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e379957\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eVolvo Penta OEM Reference\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003e82745\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAftermarket References\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eSierra 18-4218; GLM 13993; RECMAR REC82745\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\" style=\"width:36%;padding:13px 10px 13px 0;border-bottom:1px solid #e0e5df;vertical-align:top;text-align:left;font-size:14px;font-weight:700;color:#456052;\"\u003eAlternate Packaging References\u003c\/th\u003e\n          \u003ctd style=\"padding:13px 0 13px 10px;border-bottom:1px solid #e0e5df;vertical-align:top;\"\u003eSierra 18-4218D (display-packaged version of 18-4218); Sierra 18-3223-9 (separate bulk-pack reference). These packaging identifiers are for cross-reference only and do not define the packaging of this listing.\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eSupplied Parts\u003c\/h2\u003e\n    \u003cul style=\"margin:0;padding-left:22px;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eBrass cooling-system drain plug \/ bleed screw (1\/4\" NPT)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eService \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eGeneral service guidance only. Use the service manual for your exact engine and exhaust configuration.\u003c\/p\u003e\n    \u003col style=\"margin:0;padding-left:22px;list-style-type:decimal;\"\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eShut down the engine, prevent accidental starting, and allow the engine block, manifold, and cooling water to cool completely before removing any drain plug.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eRemove the existing fitting and inspect the cylinder-block or manifold port threads for corrosion, rust scale, or debris that could block cooling-system drainage or damage the brass threads.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eCompare the removed plug with the replacement to verify the 1\/4\" NPT thread specification before threading it into the port by hand to avoid cross-threading.\u003c\/li\u003e\n      \u003cli style=\"margin:0 0 12px;\"\u003eTighten according to the engine manufacturer's service manual procedures and inspect the port for cooling-water leaks during initial operation; shut down and inspect if any leakage occurs.\u003c\/li\u003e\n    \u003c\/ol\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;padding:24px;border-top:1px solid #bdc9c0;border-bottom:1px solid #bdc9c0;background:#f5f3ec;box-sizing:border-box;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eThe Serdamarine Approach\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 14px;\"\u003eExhaust parts need a configuration match. Serdamarine focuses on marine exhaust manifolds and their related service parts. Application details, connection requirements and public reference numbers are presented together to support part selection.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin:0 0 40px;\"\u003e\n    \u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eQuestions Before Replacement\u003c\/h2\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eCan this plug be used for a 1\/8\" NPT or metric 10 × 1 drain port?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eNo. This fitting is machined specifically for a 1\/4\" NPT pipe thread port on compatible GM engine blocks and manifolds. It is not interchangeable with 1\/8\" NPT or 10 × 1 threaded drain fittings.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eDoes this fit lower-unit gearcase drain holes or water-flush ports?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eNo. Although cataloged alongside general drain hardware, this brass plug is intended only for engine-block and exhaust-manifold cooling-system bleed or drain ports using a 1\/4\" NPT thread, not lower-unit gear-oil drains or flush connectors.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0;padding:18px 0;border-bottom:1px solid #dce3dc;\"\u003e\n      \u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eWhat do the Sierra 18-4218D and 18-3223-9 references indicate?\u003c\/h3\u003e\n      \u003cp style=\"margin:0 0 14px;\"\u003eSierra 18-4218D is a display-packaged version of 18-4218, and Sierra 18-3223-9 is a bulk-pack reference for the same 1\/4\" NPT brass drain plug design. They are listed for part cross-reference only and do not represent a bulk package or complete valve kit for this product.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e","brand":"Serdamarine","offers":[{"title":"Default Title","offer_id":45172507836467,"sku":"25PK052","price":16.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/2930\/4115\/files\/marine-exhaust-part-3521e5972eff7a1a.jpg?v=1792763877"},{"product_id":"27-96429-manifold-gasket-for-mercruiser-2-5l-3-0l-non-lx","title":"27-96429 Manifold Gasket for MerCruiser 2.5L 3.0L Non-LX","description":"\u003cdiv style=\"width:100%;max-width:960px;margin:0 auto;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.75;color:#293a35;background:#ffffff;overflow-wrap:anywhere;\"\u003e\n\u003csection style=\"padding:28px 24px;margin:0 0 40px;border-top:5px solid #234d40;background:#f5f3ec;box-sizing:border-box;\"\u003e\u003cp style=\"margin:0 0 14px;color:#456052;font-size:12px;line-height:1.6;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;\"\u003eSERDAMARINE \/ MARINE EXHAUST PARTS\u003c\/p\u003e\n\u003ch2 style=\"margin:0 0 18px;color:#203e32;font-family:Georgia,Times,serif;font-size:clamp(25px,4vw,34px);font-weight:400;line-height:1.25;\"\u003e27-96429 Manifold Gasket for MerCruiser 2.5L 3.0L Non-LX\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eAftermarket exhaust manifold mounting gasket referenced to MerCruiser 27-96429 for the listed 120\/2.5L and 140\/3.0L old-style non-LX applications. The LX gasket configuration is different; model years and serial limits are listed below.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"margin:0 0 40px;\"\u003e\u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eEngine Applications\u003c\/h2\u003e\n\u003cul style=\"list-style:none;margin:0;padding:0;\"\u003e\n\u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003eMerCruiser 120 \/ 2.5L, GM 153 CID inline-four; 1983–1989; serial 6229718–0C853255; old-style non-LX manifold.\u003c\/li\u003e\n\u003cli style=\"margin:0;padding:17px 0;border-bottom:1px solid #dce3dc;\"\u003eMerCruiser 140 \/ 3.0L, GM 181 CID inline-four; 1982–1995; serial 6229718–0F603999; old-style non-LX manifold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eNot Suitable For\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eNot suitable for MerCruiser 3.0LX, 1990–1995, serial 0C856559–0F426999; this configuration uses 27-815528 \/ GLM 33580.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eNot suitable for the MerCruiser 3.0L \/ LX configuration from serial 0F427000 onward (1995 onward); use the specified 27-815528 \/ GLM 33580 gasket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eMatch the original part reference and the configuration of the installed assembly.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"margin:0 0 40px;\"\u003e\u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eReference Numbers\u003c\/h2\u003e\n\u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eProduct references\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eMercruiser Stern \/ Out Drive — 27-96429\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eMercruiser Stern \/ Out Drive — 96429\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eSierra — 18-1204\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eSierra — 18-1204-1\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eSierra — 18-1204-1-9\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eGLM — 33570\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eMallory — 9-61419\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eOther-brand reference\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eOMC — 0912164\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eOMC — 912164\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:0 0 10px;color:#234d40;font-size:17px;line-height:1.5;font-weight:700;\"\u003eDifferent gasket configuration — not this product\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eMercruiser Stern \/ Out Drive — 27-815528\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eGLM — 33580\u003c\/li\u003e\n\u003cli style=\"margin:0 0 12px;\"\u003eother — 3853256\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection style=\"margin:0 0 40px;\"\u003e\u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eSupplied Parts\u003c\/h2\u003e\n\u003cul style=\"margin:0;padding-left:22px;\"\u003e\u003cli style=\"margin:0 0 12px;\"\u003eExhaust manifold mounting gasket (27-96429)\u003c\/li\u003e\u003c\/ul\u003e\u003c\/section\u003e\u003csection style=\"margin:0 0 40px;\"\u003e\u003ch2 style=\"margin:0 0 18px;padding:0 0 10px;border-bottom:1px solid #bdc9c0;color:#234d40;font-family:Georgia,Times,serif;font-size:25px;font-weight:400;line-height:1.35;\"\u003eService \u0026amp; Installation Notes\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 14px;\"\u003eGeneral service guidance only. Use the service manual for your exact engine and exhaust configuration.\u003c\/p\u003e\n\u003col style=\"list-style-type:decimal;margin:0;padding-left:22px;\"\u003e\n\u003cli\u003eAllow the engine to cool and prevent accidental starting before service.\u003c\/li\u003e\n\u003cli\u003eInspect the mating surfaces and connections, then install using the engine manufacturer’s procedure and specified settings.\u003c\/li\u003e\n\u003cli\u003eCheck the serviced connection for leakage before returning the engine to use.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Serdamarine","offers":[{"title":"Default Title","offer_id":45172697628723,"sku":"24GK054","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0699\/2930\/4115\/files\/marine-exhaust-part-6eeca0c29581abe5.jpg?v=1792766386"}],"url":"https:\/\/serdamarine.com\/collections\/mercruiser-120hp-gm-153-cid-sterndrive.oembed","provider":"我的商店","version":"1.0","type":"link"}