Sierra 18-2909-9 Marine Exhaust Manifold Gasket for GM V6 Engines

The Sierra 18-2909-9 exhaust manifold gasket provides a reliable seal between the exhaust manifold and cylinder head on GM V6 marine engines. Designed for GM 3.8 liter and 4.3 liter CID marine engines, this gasket ensures proper exhaust system sealing to prevent leaks and maintain engine performance.

Key Features:

• Sold as a pair - package includes 2 gaskets for complete manifold replacement
• Meets or exceeds the original equipment part specifications
• Fits GM V6 229 and 262 cu. in. marine engines
• Engineered for marine environment durability

OEM Cross-References:

• Barr: MC47-27-99757
• Crusader: 97498
• GLM: 32170
• Mallory: 9-61421
• Mercruiser Stern Drive: 27-99757, 27-8M0215011
• OMC Stern Drive: 3853412, 901157, 915025
• Volvo Penta: 3853412, 856116
• Yamaha Stern Drive: YSC-12190-00-AC

Regular inspection and replacement of exhaust manifold gaskets is essential for preventing water intrusion and catastrophic engine damage in marine applications. Always replace gaskets when servicing or replacing exhaust manifolds.