Yamaha - Water Pump Housing Cover - Cooling System Component - 6A1-44312-01-94

Overview

This is one of those parts you don’t notice until cooling performance starts acting up. The water pump housing cover helps keep everything sealed and flowing correctly inside the pump, which is critical for keeping your engine cool. If it’s worn, warped, or scored, it can throw off water flow and lead to overheating issues you didn’t see coming. When you’re servicing a water pump, this is one of those pieces you don’t want to overlook.

Key Features

• Sealed Pump Housing Support – Helps maintain proper sealing for efficient water pump operation.
• Smooth Internal Surface – Provides consistent contact for pump components to support strong water flow.
• OEM Fit and Alignment – Designed to match Yamaha specifications for correct installation and function.
• Cooling System Reliability – Plays a key role in maintaining steady engine temperature.

Engine & Boat Compatibility

Designed for Yamaha outboard engines using this style of water pump housing cover within the cooling system. Commonly used across a range of Yamaha applications where reliable water flow is essential.

FAQ

Q: What are signs this cover needs to be replaced?
A: Scoring, warping, or reduced water flow can indicate the cover is worn out.

Q: Can a worn cover cause overheating?
A: Yes, it can reduce pump efficiency and lead to poor cooling performance.

Q: Should I replace this during a water pump service?
A: It’s a good idea, especially if there’s any visible wear or damage.

Q: Does saltwater use affect this part?
A: Over time, yes—corrosion and buildup can impact performance if not maintained.

Q: Is installation difficult?
A: It’s usually straightforward when you already have the water pump apart.

• Supersessions
  6A1-44312-01-00, 6GD-G4312-00-00, 6GD-G4312-00-00, 6GD-G4312-00-8D, 7JD-RA400-00-00