Yamaha - Water Pump Impeller - Cooling System Component - 689-44352-02-00

Overview

The water pump impeller is a vital component of your Yamaha outboard’s cooling system, responsible for drawing water into the pump and circulating it through the engine. This continuous water flow helps regulate engine temperature and prevents overheating during operation. Constructed from durable, flexible rubber, the impeller is designed to withstand constant rotation and exposure to water. Over time, it can wear, crack, or lose flexibility, reducing cooling efficiency. Replacing it helps restore proper water circulation and ensures your engine remains protected under all operating conditions.

Key Features

• Water Circulation Component – Pumps cooling water through the engine to maintain proper temperature.
• Flexible Impeller Design – Ensures efficient water flow under varying engine speeds.
• OEM Yamaha Construction – Built to factory specifications for durability and precise fit.
• Routine Maintenance Part – Commonly replaced during scheduled water pump service.

Engine & Boat Compatibility

Compatible with Yamaha outboards using this component within the water pump / cooling system assembly.

FAQ

Q: What does an impeller do?
A: It draws in and circulates water through the engine to prevent overheating.

Q: When should the impeller be replaced?
A: Typically during routine maintenance or if cooling performance decreases.

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

Q: Is this included in water pump kits?
A: Yes, it is commonly included in complete water pump repair kits.

Q: Is installation difficult?
A: It requires access to the lower unit and is usually replaced during water pump service.

• Supersessions
  689-44352-01-00, 689-44352-00-00