Yamaha - Water Pump Impeller - Cooling System Component - 646-44352-01-00

Overview

The impeller is the heart of your cooling system, and when it starts to wear out, everything else follows. If you’re seeing weak water flow, overheating, or inconsistent cooling, this is usually the first part to check. This Yamaha impeller is built to move water efficiently through the engine and keep temperatures under control. It’s a routine service item, but replacing it on time makes all the difference in keeping your motor healthy.

Key Features

• Efficient Water Circulation – Pumps water through the engine to maintain proper cooling.

• Prevents Overheating – Helps protect the engine from heat damage during operation.

• OEM Yamaha Fitment – Built to factory specifications for proper fit and performance.

• Flexible Durable Blades – Designed to maintain shape and efficiency under continuous use.

Engine & Boat Compatibility

• Compatible with select Yamaha outboards that utilize this water pump impeller (confirm fitment by model and year)

FAQ

Q: How often should I replace the impeller?
A: Typically every 1–2 years or sooner with heavy use.

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

Q: Can I run the engine with a bad impeller?
A: It’s not recommended, as it can quickly lead to overheating damage.

Q: Should I replace other parts during service?
A: Yes, it’s best to inspect or replace related water pump components at the same time.