Yamaha - Chrome Water Pump Kit - Cooling System Service - 6H3-W0078-0A-00

Overview

When you’re going into a water pump, it’s worth doing it right the first time. I’ve seen too many quick impeller swaps come back with the same issues because the rest of the pump was worn out. A full kit like this gives you a clean reset on the whole system. Once it’s done, you know your cooling flow is where it needs to be every time you’re out running.

Key Features

• Complete Pump Rebuild Kit – Includes the essential components needed for a full water pump service.
• 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 pump parts during routine 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 benefit of using a full pump kit instead of just an impeller?
A: A full kit replaces all wear components, helping ensure long-term reliability and proper performance.

Q: How often should I replace my water pump components?
A: Most boaters service the pump every 1–2 seasons, especially with frequent use or saltwater exposure.

Q: Can this kit fix overheating issues?
A: Yes, if the issue is related to reduced water flow from worn pump parts.

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

Q: Does debris affect the water pump system?
A: Definitely. Sand and debris can wear internal components faster over time.