Yamaha - Water Pump Impeller - Engine Cooling Component - 68T-44352-00-00

Overview

If there’s one part I never gamble on, it’s the impeller. This little piece is what keeps water moving through the engine, and when it starts to wear, things can go bad fast. I’ve seen motors overheat just from an impeller that looked “almost fine.” It’s cheap insurance to swap it out regularly and keep your cooling system doing its job every time you hit the water.

Key Features

• Flexible Rubber Vanes – Designed to maintain strong water flow even at low speeds and idle.
• Heat-Resistant Material – Built to handle engine temperatures without breaking down prematurely.
• Consistent Water Pressure Output – Supports steady cooling performance across varying engine speeds.
• OEM Fit and Seal – Matches Yamaha housing dimensions for proper installation and reliable operation.

Engine & Boat Compatibility

Yamaha Outboard Models – Varies by application (confirm by part number)

FAQ

Q: How do I know when my impeller needs to be replaced?
A: Weak water stream, overheating, or long periods of storage are all signs it’s time for a new one.

Q: How often should I change the impeller?
A: Most people stick to every season or every 100 hours, depending on use.

Q: Can I run the engine briefly without water?
A: Even a few seconds dry can damage the impeller, so it’s best to avoid it completely.

Q: Does running in sandy water affect impeller life?
A: Yes, sand and debris wear down the vanes faster and can reduce performance.

Q: Is installation something I can handle myself?
A: If you’re comfortable dropping the lower unit, it’s a straightforward job—just pay attention to vane direction during install.