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 thermostat kits Mercury and Mariner outboard engines.

Sierra replacement plates for cooling systems.

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

Sierra replacement plates for cooling systems.

Sierra replacement plates for cooling systems.

Sierra replacement plates for cooling systems.

Sierra replacement engine couplers for Mercruiser engines.

Miscellaneous Sierra cooling system parts for Yamaha outboard engines.

Miscellaneous Sierra cooling system parts for Mercury and Mariner outboard and Mercruiser engines.

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 head gaskets for Johnson, Evinrude and BRP outboard engines.

Sierra hgh performance ignition coils for inboard and inboard/outdrive engines. Oil filled for better cooling and long life. Produces higher voltage needed to run larger spark plug gaps for added power and better fuel economy. Compatible with capacitive discharge systems.