Sierra thermostat gaskets for Mercruiser.

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.

Detroit Diesel 671TI-871-1271SS KIT Service Kit Detroit Diesel- Service Kit with Wearplate, Cover Gasket, Endcover, Slinger, Impeller, 5 Cover Screws, Retaining Ring, Cam, Cam Screw, Bearing Seal, Main Seal, Shaft, Ball Bearing, 2 Round Port Gaskets

Sierra lower unit seal kit for Johnson, Evinrude and BRP outboard engines and OMC/Cobra sterndrive engines.

Sierra water pump kits for Yamaha outboards. Kit includes housing.

Sierra lower unit seal kit for Johnson, Evinrude and BRP outboard engines and OMC/Cobra sterndrive engines.

Sierra replacement drain screws and gaskets for Mercury and Mercruiser.

Sierra replacement drain screws and gaskets for Mercury and Mercruiser.

Sierra replacement drain screws and gaskets for Mercury and Mercruiser.

Sierra replacement drain screws and gaskets for Mercury and Mercruiser.

Sierra water pump kits for Yamaha outboards. Kit includes housing.

Sierra water pump kits for Yamaha outboards. Kit includes housing.

Sierra water pump kits for Johnson, Evinrude and BRP outboards. Kit includes housing.

Sierra water pump kits for Johnson, Evinrude and BRP outboards. Kit includes housing.

Sierra water pump kits for Johnson, Evinrude and BRP outboards. Kit includes housing.