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 upper unit seal kits.

Fits: OMC stern-drive 2.5L, 3.0L - 1979-85. 3-wire connection with ring terminal ends. Uses TR211 repair kit (cast aluminum), or TR210 repair kit (stamped steel -fits: Prestolite ESQ4005, ESQ4008).

Sierra lower unit seal kit for Mercruiser sterndrive engines.

Fits late Style Alpha I, Gen II & Bravo Drives, Early Style Square Motors. Mercruiser Sterndrive Replacement for Oildyne Units.

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

Sierra upper unit seal kits.

Sierra transom seal kits.

Sierra yokes for Mercruiser engines.

Removes and installs driveshaft bearing retainer on MC-I, R-MR, Blackhawk, all Bravo and all Alpha drive units.

Sierra lower unit seal kits for Mercury outboard engines.

Sierra lower unit seal kits for Mercury outboard engines.

Sierra lower unit seal kits for Mercury outboard engines.

Sierra transom seal kits.

Sierra oil seals drive shaft housings in Mercury and Mercruiser engines.