Thrust Ring, MR, Alpha One & Gen II

Thrust Ring. For Mercruiser Stern Drive and Mercury Marine/Race Outboard. Fits: MR, Alpha One & Gen II. Replaces Mercruiser 681001, Mercury 68100, 681001, Mallory 9-78106, and GLM 23140. Premium Quality For Longer Life. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. Fits: MR, Alpha One & Gen II Replaces Mercruiser 681001, Mercury 68100, 681001, Mallory 9-78106, and GLM 23140 Premium Quality For Longer Life Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty