Sierra 18-3751 Spanner Clamp Nut Mercury 79448 8M2000347 8M2011027 21120 9-72155

Designed for use in Mercury marine and Mercruiser stern drive applications
Fits IA/IB/IC and EZ Shift, MC-I, R, MR, Alpha One, Gen II, Vazer, TRS, Bravo I and IX models
Interchangeable with GLM 21120, Mallory 9-72155, Mercruiser Stern Drive 35912, 52834, 79448, Mercury Marine 79448, 8M2000347, 8M2011027
Each Sierra product meets or exceeds the original equipment part it replaces
Boat Motor for Outboard Engine Spare Part