Water Pump Impeller Service Kit – Fits Yamaha 2-Stroke 40/50 HP (Replaces 6H4-W0078-00, 18-3408, 18-3429) 160HP 437228 Except 1993 9

437228 Except 1993 9

Allow the surface to dry completely

This kit contains parts to rebuild a single carburetor

A brittle or cracked impeller discovered during inspection also indicates immediate need for replacement

Position the outdrive in the full tilt-up position and secure it safely

Water Pump Impeller Service Kit – Fits Yamaha 2-Stroke 40/50 HP (Replaces 6H4-W0078-00, 18-3408, 18-3429) 160HP 437228 Except 1993 9Product Details This Water Pump Impeller Service Kit is designed for Yamaha 2 stroke outboard motors, specifically fitting 40 HP models from 19952005 and 50 HP models (including the Pro Series P50) from 19982009. It provides all necessary components for a complete water pump overhaul to restore cooling performance. This kit serves as a direct replacement for Yamaha OEM part numbers 6H4 W0078 00, 6H4 W0078 00 00, 6H4 W0078 01 00, and 6H4 W0078 A0 00,