Sierra’s 18-1155 Reverse Gear Ball Bearing is designed for use with IA/IB/IC and EZ Shift, MC-I, R, MR, Alpha One and Gen II engines. It is interchangeable with GLM 21620, Mallory 9-75114, and Mercury Marine 30-17927, 30-35914, 30-88957, 30-88957A1, 30-88957T. Each Sierra product meets or exceeds the original equipment part it replaces.
Designed for use with IA/IB/IC and EZ Shift, MC-I, R, MR, Alpha One and Gen II engines
Interchangeable with GLM 21620, Mallory 9-75114, and Mercury Marine 30-17927, 30-35914, 30-88957, 30-88957A1, 30-88957T
Includes one bearing per package
Each Sierra product meets or exceeds the original equipment part it replaces
