Upper Unit Gear Set, Mercruiser

Upper Unit Gear Set. Drive Gear: 22 Teeth. Driven Gear: 20 Teeth. Ratio: 1.5:1. For: most V-8 drives & Gen II (s/n 0K999999 & Below). For: most V-8 drives & Gen II (s/n 0K999999 & Below) Ratio: 1.5:1 Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty