864929A2 3" Closed-Cooling Dry-Joint Manifold Kit for MerCruiser
864929A2 3" Closed-Cooling Dry-Joint Manifold Kit for MerCruiser is backordered and will ship as soon as it is back in stock.
Care information
Care information
Display general product information or specific product information using metafields.
Delivery and Shipping
Delivery and Shipping
Add some general information about your delivery and shipping policies.
864929A2 3" Closed-Cooling Dry-Joint Manifold Kit for MerCruiser
864929A2 3" Closed-Cooling Dry-Joint Manifold Kit for MerCruiser is backordered and will ship as soon as it is back in stock.
SERDAMARINE / MARINE EXHAUST PARTS
Exhaust Manifold Kit — 3 in. (76 mm) Closed-Cooling Dry-Joint Configuration
This aftermarket exhaust manifold kit is designed for servicing a 3 in. (76 mm) spacer/riser installation on MerCruiser stern/outdrive engines equipped with closed cooling and dry-joint exhaust manifolds. It corresponds to primary OEM reference Mercury Quicksilver 864929A2 (associated with a 3" warm-riser spacer/riser kit) and is distinct from standard-cooling 3-inch dry-joint kits.
Configuration & Specifications
| Spacer / Riser Size | 3 in. (76 mm) |
|---|---|
| Exhaust Joint Style | Dry Joint |
| Cooling Configuration | Closed Cooling (associated with 3" warm-riser spacer/riser installation) |
Engine Applications
This kit applies to MerCruiser stern/outdrive installations built with dry-joint exhaust manifolds, a 3 in. (76 mm) spacer/riser, and a closed-cooling system. Do not select this kit as a universal fit for all MerCruiser V6 or V8 engines; match the cooling system, dry-joint configuration, 3 in. (76 mm) spacer size, and original part reference before ordering.
- MerCruiser Stern / Out Drive — Dry-Joint Exhaust Manifold Systems — For 3 in. (76 mm) spacer/riser installations with closed cooling (warm-riser spacer/riser configuration referenced under OEM 864929A2). Fits when specified
Not Suitable For
- MerCruiser Stern / Out Drive — Standard-Cooling 3 in. (76 mm) Dry-Joint Installations — Standard-cooling systems use a different configuration referenced separately under Mercury 864929A1 / GLM 50371. Not suitable
Reference Numbers
The numbers below are provided for part identification and cross-reference only; they do not alone guarantee interchangeability across different cooling setups or indicate original manufacturer identity.
| OEM References (Closed Cooling, 3 in. Dry Joint) | Mercury / Mariner / Quicksilver: 864929a 2, 864929A 2, 864929A2 |
|---|---|
| Aftermarket References (Closed Cooling, 3 in. Dry Joint) | Sierra Marine: 18-1844K GLM: 50373 |
| Other Configuration Comparison (Standard Cooling — Not This Kit) | Mercury / Mariner: 864929A1 GLM: 50371 |
Supplied Parts
- Exhaust Manifold Kit
Service & Installation Notes
General service guidance only. Use the service manual for your exact engine and exhaust configuration.
- Shut down the engine, disconnect the battery to prevent accidental starting, and allow the exhaust system and coolant circuits to cool completely before disassembly.
- Support heavy exhaust manifolds, risers, and spacers during removal and installation to prevent strain on mounting hardware and mating flanges.
- Clean and inspect all dry-joint mating surfaces on the manifold, 3 in. (76 mm) spacer/riser, and elbow, ensuring sealing areas are free of old gasket material, corrosion, or scoring.
- Verify that the passage layout and cooling arrangement match the closed-cooling dry-joint design specified in your engine service manual before final assembly.
- After installation, inspect all joints for exhaust gas or liquid leaks under normal operating conditions; stop the engine immediately and inspect if any leakage or abnormal temperature occurs.
The Serdamarine Approach
Exhaust 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.
Questions Before Replacement
How does 864929A2 differ from 864929A1 on 3-inch dry-joint exhaust systems?
Both numbers apply to 3 in. (76 mm) dry-joint spacer/riser installations, but they serve different cooling configurations. Reference 864929A2 (along with Sierra 18-1844K and GLM 50373) is for closed-cooling systems (warm-riser spacer/riser kit), whereas 864929A1 (and GLM 50371) is listed separately for standard-cooling systems.
Does this kit fit all MerCruiser V6 and V8 engines with dry-joint manifolds?
No. It is only for MerCruiser dry-joint exhaust manifold installations configured with both a 3 in. (76 mm) spacer/riser and closed cooling.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product features
Use this section to highlight specific product features to your customers.
Product comparison grid
Add content here to explain a bit about the range of products on offer and which ones may be most suitable for your customers.
