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Brand Part Number Yamaha 61A-W0078-A1-00 Yamaha 61A-W0078-A2-00 Yamaha 61A-W0078-A3-00 Yamaha 61A-W0078-A4-00 Yamaha 64L-W0078-00-00 Yamaha 65L-W0078-A0-00 Sierra 18-3396-1 Mallory 9-48618
The notches inside are designed to help grip the shaft
Start the engine using a water supply and confirm a steady stream of water flows from the tell-tale port
Ensure the engine is completely cool before starting
A: The best way is to verify your drive and engine model against the detailed compatibility tables provided on this page
Water Pump Housing – Fits Yamaha 55HP C55 Outboards (Replaces 663-44311-02-00) family-yamaha-8sg Brand Part Number Yamaha 61A-W0078-A1-00Water Pump Housing Fits Yamaha 55HP C55 Outboards (Replaces 663 44311 02 00) This aftermarket water pump housing is designed for Yamaha 2 Stroke 55HP (C55) outboard models manufactured between 1991 and 1994. It serves as a direct replacement, ensuring proper fit and function for cooling system repairs. It directly replaces Yamaha OEM part number 663 44311 02 00 and is interchangeable with aftermarket part numbers from Sierra (9 43255) and GLM (12446).