Yamaha - Water Pump Housing - Cooling System Component - 689-44311-03-00

Overview

Water pump housings take a beating over time, especially in saltwater. I’ve pulled plenty apart where wear inside the housing was the reason the engine wasn’t cooling like it should. This piece keeps the impeller properly aligned and the water flow moving where it needs to go. When it’s in good shape, you get steady cooling and peace of mind every time you’re out.

Key Features

• Impeller Housing Support – Maintains proper alignment for efficient water flow.
• OEM Fitment – Built to Yamaha specifications for correct sealing and performance.
• Smooth Water Channeling – Helps ensure consistent engine cooling.
• Corrosion-Resistant Build – Designed to handle harsh marine environments.

Engine & Boat Compatibility

C25 – Various Year Ranges
C30 – Various Year Ranges

FAQ

Q: What are signs the water pump housing is worn out?
A: Reduced cooling, overheating, or visible scoring inside the housing.

Q: Should I replace the housing when changing the impeller?
A: If there’s wear or grooves, it’s a good idea to replace it.

Q: Can a worn housing affect water pressure?
A: Yes, it can reduce efficiency and lead to poor cooling performance.

Q: Does saltwater damage this part over time?
A: Yes, corrosion and wear are common in saltwater use.

Q: Is installation difficult?
A: It’s straightforward during a water pump service, but proper alignment is key.

• Supersessions
  689-44311-02-00