Water Pump Impeller Kit – Fits Mercury/Mariner 30-70 HP (Replaces 77177A3, 46-77177A3) 40-50HP The anti-cavitation plate is robust

The anti-cavitation plate is robust enough for this modification

causing the seawater pump to stop turning

Verify images and specifications against your original part before ordering

Avoid scoring the housing

and milky-looking engine oil

Water Pump Impeller Kit – Fits Mercury/Mariner 30-70 HP (Replaces 77177A3, 46-77177A3) 40-50HP The anti-cavitation plate is robustProduct Details This Water Pump Impeller Kit is designed for Mercury and Mariner 3070 HP 2 stroke outboard engines manufactured between 1977 and 1997. It ensures your engine's cooling system functions efficiently, preventing overheating and potential damage. The kit serves as a direct replacement for Mercury part numbers 77177A3 and 46 77177A3, as well as Sierra 18 3324 and GLM 12100, providing a comprehensive solution for your maintenance needs.