Product Information
- Designed for use in Mercruiser Alpha Gen II (s/n 0F680000 & Up) stern drives
- Comes with (1) Sierra 18-1179 Tapered Roller Bearing, (1) Sierra 18-7161 O-Ring, and (1) Sierra 18-2282 Shim Set
- Interchangeable with Mallory 9-78120, GLM 28402, and Mercruiser Stern Drive 18312A3 and 828692A1
- Each Sierra product meets or exceeds the original equipment part it replaces