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 replacement thermostats for OMC Sterndrive/Cobra inboard/outdrive 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.

Zinc Wedge Anode for 35-300 HP Mercury/Mariner Engines Tecnoseal Zinc Wedge Anode for Mercury/Mariner 35-300 HP engines. Wedge anode located on the side of the gear housing just above the cavitation plate. For use in salt water. Mercury part number 826134.

Miscellaneous Sierra cooling system parts for Yamaha outboard engines.

Sierra thermostat kits for OMC Sterndrive/Cobra 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.