Yamaha - Water Pump Housing Assembly - Cooling System Component - 6L5-44360-01-00 / 6L5-44360-02-00

Overview

When you’re working on the cooling system, the housing is one of those parts that can get overlooked until it’s worn or scored. If it’s not in good shape, even a new impeller won’t perform the way it should. I’ve run into plenty of cases where weak water flow came down to the housing, not the pump itself. Replacing it keeps everything tight and lets the cooling system do its job without fighting worn surfaces.

Key Features

• Optimized Pump Chamber Design – Provides proper space and surface for efficient water movement.
• Smooth Internal Surface – Helps maintain consistent impeller contact for reliable water flow.
• Corrosion-Resistant Construction – Built to handle constant exposure to water and marine conditions.
• Factory-Spec Fitment – Designed to match Yamaha cooling system components for proper installation.
• Supports Full Pump Performance – Ensures the impeller operates at its intended efficiency.

Engine & Boat Compatibility

Designed for Yamaha outboard engines using compatible water pump systems. Commonly used across small to mid-range outboards on fishing boats, skiffs, and utility vessels. Always confirm part number compatibility before installation.

FAQ

Q: How do I know if the pump housing needs replacing?
A: If you see scoring, grooves, or uneven wear inside the housing, it’s time to replace it.

Q: Will a worn housing affect water pressure?
A: Yes, it can reduce pump efficiency and lead to weak or inconsistent water flow.

Q: Should I replace this with every impeller change?
A: Not always, but it’s important to inspect it each time and replace it if there’s visible wear.

Q: Is installation complicated?
A: It’s usually straightforward if you’re already servicing the water pump, just make sure everything is aligned properly.

Q: Can this cause overheating issues?
A: Yes, if the housing is worn, it can prevent the cooling system from circulating water effectively.

• Supersessions
  6L5-44360-02-00, 6L5-44360-02-00, 6L5-44361-00-00, 6L5-44361-01-00