Yamaha - Chrome Water Pump Kit - Cooling System Service - 6H3-W0078-1B-00

Overview

When you’re servicing a water pump, it’s not just about swapping parts—it’s about making sure the whole system is solid when you button it back up. I’ve used kits like this on motors that needed a full refresh, especially after running in salt or sandy water. If the pump isn’t doing its job, everything else suffers fast. Getting it right here means you can run the motor hard without worrying about temperature creeping up.

Key Features

• Complete Pump Rebuild Kit – Includes essential components needed to restore full water pump function.
• Consistent Cooling Performance – Helps maintain steady water flow to protect against overheating.
• Corrosion-Resistant Components – Designed to handle harsh marine environments, including saltwater use.
• OEM Fitment Design – Built to Yamaha specifications for proper alignment and sealing.
• Full System Refresh – Ideal for replacing worn internal pump parts during scheduled maintenance.

Engine & Boat Compatibility

Designed for Yamaha outboards with compatible water pump and cooling system assemblies. Commonly used across small to mid-size engines found on fishing boats, skiffs, and recreational vessels. Always verify compatibility with your specific engine before installation.

FAQ

Q: What’s the difference between this kit and a basic impeller replacement?
A: This kit includes multiple components, not just the impeller, giving you a more complete rebuild.

Q: When should I use a full pump kit like this?
A: If the pump has wear beyond just the impeller or hasn’t been serviced in a while, it’s the better option.

Q: Can this help fix overheating issues?
A: Yes, if the cause is reduced water flow from worn pump components.

Q: Is installation something I can do myself?
A: If you’re comfortable removing the lower unit and following proper steps, it’s a manageable job.

Q: Does saltwater use require more frequent replacement?
A: Definitely. Salt and debris can wear pump components faster, so regular service is important.