Water Pump Impeller Kit – Fits Mercury Marine 2-Cycle Outboards 30-70 HP (Replaces Mercury 46-77177A3, Sierra 18-3324) 200-300HP Brand Part Number Yamaha 6G5-W0078-A1-00

Brand Part Number Yamaha 6G5-W0078-A1-00 Yamaha 6G5-W0078-00-00 Yamaha 6G5-W0078-01-00 Sierra 18-3311 Mallory 9-48618

and interchanges with Sierra 18-3215 and GLM 12107

the O-ring seal

Symptoms of a bad filter include engine hesitation

Reinstall the propeller

Water Pump Impeller Kit – Fits Mercury Marine 2-Cycle Outboards 30-70 HP (Replaces Mercury 46-77177A3, Sierra 18-3324) 200-300HP Brand Part Number Yamaha 6G5-W0078-A1-00Product Details This Water Pump Impeller Kit is a complete assembly designed to restore the cooling system on Mercury and Mariner 2 cycle outboards from 30 to 70 HP (19771997). The kit includes the impeller, housing, gaskets, and all necessary hardware for a full replacement, ensuring your engine maintains proper operating temperature. It serves as a direct replacement for Mercury parts 46 77177A3 77177A3 and interchanges with Sierra 18 3324, GLM