Water Pump Impeller Kit – Fits Yamaha F50A 4-Stroke (Replaces Yamaha 6BG-W0078-01-00, Sierra 18-3434) 3.6HP Unbolt and carefully lift the

Unbolt and carefully lift the old water pump housing

Includes a new impeller and essential replacement components for a full repair

Reconnect any hoses or sensors that were removed

Visually comparing the old pump to our product photos can also help confirm fitment

Water Pump Impeller Kit – Fits Yamaha F50A 4-Stroke (Replaces Yamaha 6BG-W0078-01-00, Sierra 18-3434) 3.6HP Unbolt and carefully lift theProduct Details This Water Pump Impeller Kit provides a complete solution for servicing the water pump on Yamaha 4 stroke 4050 HP outboards, including models F40, F50A (19912007), F30LA, and F40LA. It is designed to restore cooling system performance and prevent engine overheating. It serves as a direct replacement for Yamaha part numbers 6BG W0078 01 00 and 6BG W0078 00 00, as well as aftermarket equivalents Sierra 18 3434, JLM YHJB 6BG, and