Water seal damper for Yamaha outboard engines.

Miscellaneous Sierra cooling system parts for Yamaha outboard engines.

Water seal damper for Yamaha outboard engines.

Water seal damper for Yamaha outboard engines.

Sierra Marine Engine Parts & Drive Parts   Sierra Marine is a trusted name in aftermarket replacement boat engine and drive parts. Sierra’s products are designed and engineered to exceed the high horsepower demands of today’s engines in the harshest marine environments. All Sierra products meet or exceed the original equipment part it replaces.   If you need help finding a part, we need, Make, Model, Year, Horsepower, and Serial number of your engine.   Warning: We can no longer ship engine parts International or to California Due to Prop 65.

Sierra screws and washers for Yamaha drive systems.

Sierra replacement plates for cooling systems.

Sierra replacement plates for cooling systems.

Sierra fuel line assemblies meet or exceed both USCG safety regulations and EPA evaporative emissions requirements. Assemblies consist of engine connector, low-perm primer bulb and tank connectors. Designed to be used in connection with 18-8078 large bore 13mm tank adapter. 2-stroke DT model complete with 13mm tank adapter to replace small (11mm) and large (13mm) bore fuel line assemblies. 4-stroke DF model designed with 13mm quick-disconnect tank connector and a prong engine connector to replace most 15 to 140HP assemblies. Hi visibility display packaging.

Sierra pipe plugs used in I/O and Inboard engine cooling systems. Pipe sealant with Teflon® is recommended for use on pipe plugs.

Sierra pipe plugs used in I/O and Inboard engine cooling systems. Pipe sealant with Teflon® is recommended for use on pipe plugs.

Sierra pipe plugs used in I/O and Inboard engine cooling systems. Pipe sealant with Teflon® is recommended for use on pipe plugs.

Sierra carburetor kits and replacement parts Mercury outboards.

Sierra hoses for cooling systems.

Sierra impeller kits Mercury and Mariner outboards.