Compatible with Mercury Mariner 4HP and 5HP 2-stroke models within the specified serial number range
Always use a new gasket with each installation to ensure a proper seal
Carefully check for any leaks around the thermostat housing
It ensures your engine operates within the optimal temperature range for performance and longevity
Start the engine and allow it to idle
Water Pump Impeller Kit – Fits Mercury/Mariner 4-Stroke 30-70 HP (Replaces 46-812966A12) family-yamaha-50ejrs Compatible with Mercury Mariner 4HPWater Pump Impeller Kit Fits Mercury Mariner 4 Stroke 30 70 HP (Replaces 46 812966A12) This water pump impeller kit provides a complete solution for servicing the cooling system on Mercury Mariner 4 Stroke 30, 40, 50, 60, and 70 HP outboard engines (1991 and newer models). It is engineered to serve as a direct replacement for Mercury Quicksilver part numbers 46 812966A12, 46 812966A11, and 46 812966A10, as well as aftermarket equivalents from Sierra,