27-864547A02 Full Flow Dry-Joint Elbow Gasket Set for MerCruiser
27-864547A02 Full Flow Dry-Joint Elbow Gasket Set for MerCruiser is backordered and will ship as soon as it is back in stock.
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27-864547A02 Full Flow Dry-Joint Elbow Gasket Set for MerCruiser
27-864547A02 Full Flow Dry-Joint Elbow Gasket Set for MerCruiser is backordered and will ship as soon as it is back in stock.
SERDAMARINE / MARINE EXHAUST PARTS
Full Flow Dry-Joint Exhaust Elbow Gasket Set — 2 Pieces
This two-piece set of Full Flow dry-joint exhaust elbow gaskets (referencing MerCruiser 27-864547A02) services compatible MerCruiser GM V6 and small-block V8 (4.3L, 5.0L, 5.7L, and 6.2L) exhaust manifold, riser, and elbow connections from 2002 onward.
It is designed specifically for dry-joint open manifold and riser connections requiring the Full Flow gasket version—covering 2002–2004 7° and 2005–2010 14° dry-joint configurations—and is distinct from the Restrictor and Block Off gasket versions.
Configuration & Specifications
| Joint Configuration | Dry Joint (Open Manifold and Riser) |
|---|---|
| Flow Configuration | Full Flow (distinct from Restrictor and Block Off versions) |
| Connection Position | Exhaust manifold, riser, or elbow connection |
| Listed Dry-Joint Angle Configurations | 7° dry-joint configuration (2002–2004); 14° dry-joint configuration (2005–2010) |
Engine Applications
Match the required part number and gasket flow version at the specific manifold, riser, or elbow connection rather than selecting by engine displacement alone.
- MerCruiser 4.3L, 5.0L, 5.7L, and 6.2L — Applications utilizing the Dry Joint Open Manifold and Riser requiring the Full Flow gasket version. Fits when specified
- MerCruiser GM V6 & V8 Small Block (S.B.) — Years: 2002–2004. Joint and angle configuration: Dry Joint - 7°. Flow configuration: Full Flow exhaust elbow gasket. Fits when specified
- MerCruiser GM V6 & V8 Small Block (S.B.) — Years: 2005–2010. Joint and angle configuration: Dry Joint - 14°. Flow configuration: Full Flow exhaust elbow gasket. Fits when specified
- MerCruiser V6 & V8 — Years: 2002 onward. Configuration: Dry Joint exhaust elbow connection with Full Flow gasket. Fits when specified
Not Suitable For
- Connections requiring Restrictor or Block Off gaskets — This set is the Full Flow version only and cannot substitute for Restrictor or Block Off gasket versions. Not suitable
Additional model-specific applications
- MerCruiser GM V8 S.B., 2002–2004, Dry Joint, 7° exhaust, Full Flow gasket.
- MerCruiser GM V8 S.B., 2005–2010, Dry Joint, 14° exhaust, Full Flow gasket.
Reference Numbers
Public part numbers are listed for identification and cross-reference only; they do not imply that this aftermarket set is made by the original equipment manufacturer or that all listed numbers are interchangeable across different flow configurations.
| MerCruiser Full Flow References | 864547A02, 27-864547A02, 27-864547A1 |
|---|---|
| GLM Full Flow Reference | 37910 |
| Sierra Full Flow Reference | 18-0721 |
| Other Dry-Joint Gasket References (Comparison Only — Not Confirmed Full Flow Equivalents) | MerCruiser: 27-864850A02, 27-864549A02, 27-864549A1 GLM: 37900, 37920 Sierra: 18-0720, 18-0722 |
Supplied Parts
- 2 × Full Flow dry-joint exhaust elbow gaskets
Service & Installation Notes
General service guidance only. Use the service manual for your exact engine and exhaust configuration.
- Shut down the engine, allow the exhaust assembly to cool completely, and disconnect the battery to prevent accidental starting before disassembly.
- Support heavy exhaust elbows or risers during removal, and clean both mating surfaces thoroughly while protecting the sealing faces from scratches or gouges.
- Compare the water passage slots on the new Full Flow gaskets against the existing joint requirements; never substitute a Full Flow gasket where a Restrictor or Block Off gasket is specified by the engine manual.
- Position the gasket in the orientation specified by the OEM service manual, reassemble the dry-joint connection, and tighten fasteners to the manufacturer's specified sequence and torque.
- After reassembly, inspect the joint during initial operation; if any exhaust or water leakage or abnormal temperature occurs, stop the engine immediately and inspect the connection.
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
Can this gasket set replace Restrictor or Block Off dry-joint gaskets?
No. This set contains only the Full Flow version (referencing MerCruiser 864547A02, 27-864547A02, 27-864547A1, GLM 37910, and Sierra 18-0721). Restrictor and Block Off gaskets are separate versions with different coolant passage openings.
Does this Full Flow gasket fit both 7° and 14° MerCruiser dry-joint elbows?
Yes, when the connection uses a Full Flow gasket on an open dry-joint manifold and riser, the listed applications include GM V6 and small-block V8 7° dry-joint configurations (2002–2004) and 14° dry-joint configurations (2005–2010).
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