Yamaha - Water Pump Housing - Cooling System - 6E0-44311-00-00

Overview

If you’ve spent any time maintaining small Yamaha outboards, you know the water pump housing takes a beating over time. This housing sits right where all the cooling water starts its journey, so wear from sand, silt, and heat cycles is just part of its life. When it starts to score or warp, you’ll notice it in your engine temps pretty quickly. Swapping it out restores proper water flow and keeps your motor running the way it should on long days out.

Key Features

• OEM Fitment Accuracy – Built to match original Yamaha specs so it seats correctly and seals without guesswork.
• Durable Composite Construction – Designed to handle heat, friction, and debris moving through the cooling system.
• Optimized Water Flow Path – Maintains consistent pressure and flow to protect the engine from overheating.
• Direct Replacement Design – Installs in place of the original housing with standard tools and no modifications.

Engine & Boat Compatibility

Designed for Yamaha 2-stroke outboard engines, commonly found on smaller horsepower applications used in skiffs, tenders, and lightweight fishing boats. Works within standard Yamaha cooling system setups using an impeller-driven water pump.

FAQ

Q: How do I know if my water pump housing needs replacing?
A: Look for overheating, weak telltale flow, or visible scoring inside the housing when inspecting the pump.

Q: Can I reuse my old housing when replacing the impeller?
A: If it’s smooth and not warped, maybe—but most techs replace it to avoid premature impeller wear.

Q: Is this something I can install myself?
A: Yes, if you’re comfortable dropping the lower unit and following a basic water pump service.

Q: How does saltwater use affect this part?
A: Salt accelerates wear and buildup, so regular inspection and flushing are key to extending its life.

Q: Should I replace anything else at the same time?
A: It’s best to replace the impeller, wear plate, and gaskets together for a complete service.