Mercury Impeller Key - 8M0032831 (SN 1C453840 & Above)

Mercury Impeller Key - 8M0032831

This impeller key ensures proper alignment and secure attachment of the water pump impeller to the drive shaft, maintaining optimal water flow and engine cooling. It is specifically designed to secure the impeller in place on the water pump shaft to ensure proper water circulation throughout the engine, preventing overheating and ensuring smooth engine operation.

Fits: 

• 40-60HP 4-Stroke Standard Gearcase (SN 1C453840 & Above)