Yamaha - Impeller - Water Pump Cooling Component - 655-44352-09-00

Overview

If there’s one part I don’t take chances on, it’s the impeller. This is what keeps water moving through your engine, and when it starts to wear out, things can go bad fast. I’ve pulled plenty of old ones that looked fine until you flexed the blades and saw they were done. Swapping in a fresh Yamaha impeller like this is cheap insurance to keep your motor running cool and trouble-free.

Key Features

• Efficient Water Flow Design – Moves consistent water through the cooling system to prevent overheating.
• OEM Fitment – Matches Yamaha specifications for proper pump housing fit and performance.
• Flexible Rubber Blades – Designed to maintain shape and function under constant rotation.
• Reliable Cooling Performance – Helps maintain steady engine temperature under load.

Engine & Boat Compatibility

Fits Yamaha outboard engines equipped with compatible water pump systems. Commonly used on smaller to mid-range horsepower outboards across fishing boats, tenders, and utility vessels.

FAQ

Q: How often should I replace my impeller?
A: A good rule is every season or every 100 hours, depending on how often you run your boat.

Q: What are signs of a worn-out impeller?
A: Weak water stream, overheating, or inconsistent cooling are common warning signs.

Q: Can I run the engine briefly with a bad impeller?
A: It’s risky—even short runs can lead to overheating and engine damage.

Q: Does saltwater use wear out impellers faster?
A: Yes, especially if sand or debris is present, so regular inspection is important.

Q: Is replacing the impeller difficult?
A: It involves dropping the lower unit, but it’s manageable if you’ve done basic maintenance before.