For Yamaha 40 50 60HP Outboard Water Pump Impeller 63D-W0078-01 63D-W0078-01-00

Water Pump Impeller for Yamaha

This water pump impeller for Yamaha 40, 50, and 60HP outboards is a direct replacement cooling component that keeps the engine from overheating. Engineered as a water pump impeller, this part restores water flow through the cooling system and replaces OEM part numbers 63D-W0078-01 and 63D-W0078-01-00.

Overview

This water pump impeller for Yamaha 40, 50, and 60HP outboards supplies the cooling water flow needed to protect the powerhead during operation. It is designed for Yamaha outboards using the original 63D-W0078-01 impeller. Replacing a worn water pump impeller helps maintain proper engine temperature and reduces the risk of heat damage.

Built For Performance

• Replaces OEM part numbers 63D-W0078-01 and 63D-W0078-01-00
• Engineered for Yamaha 40HP, 50HP, and 60HP outboard cooling systems
• Flexible impeller blades move water steadily through the pump housing
• Direct-fit design simplifies routine lower unit water pump service
• Heat- and oil-resistant construction suits marine engine environments

Fits These Machines

• for Yamaha 40 HP outboard
• for Yamaha 50 HP outboard
• for Yamaha 60 HP outboard

On-The-Job Use

• Replacing a worn outboard water pump impeller during routine maintenance
• Restoring cooling water flow when the engine starts to run hot
• Maintaining safe engine temperature during trolling or slow-speed running
• Servicing the lower unit after a season in saltwater or silt-heavy water

Specs At A Glance

Good To Know

Q: How often should an outboard water pump impeller be replaced? A: Many mechanics recommend replacement every 2 to 3 seasons, or when cooling water flow weakens. For Yamaha 40, 50, and 60 HP outboards, this impeller restores proper circulation when installed with a clean pump housing.

Q: Does this impeller work in both saltwater and freshwater? A: Yes, it is designed for Yamaha outboards operated in both environments. Rinsing the cooling system after saltwater use can extend impeller life.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.