Yamaha - Water Pump Repair Kit - Cooling System - 6E0-W0078-A5-00

Overview

When it comes to keeping a Yamaha running cool, I always tell people not to cut corners on the water pump. By the time you’re opening it up, it usually makes sense to replace everything instead of guessing which part might fail next. I’ve seen guys swap just an impeller and end up right back in the shop a few trips later. A full repair kit like this gets the job done right the first time and keeps water flow strong.

Key Features

• Complete Service Kit – Includes essential components needed for a full water pump rebuild.
• Restores Cooling Performance – Helps bring water pressure and flow back to proper levels.
• Durable Marine-Grade Materials – Built to handle heat, friction, and debris in real-world conditions.
• OEM Matched Components – Designed to work together for proper fit and reliable operation.

Engine & Boat Compatibility

Designed for Yamaha 2-stroke outboard engines using standard water pump systems. Commonly used on smaller horsepower motors found on skiffs, jon boats, and lightweight fishing setups.

FAQ

Q: When should I use a full repair kit instead of just replacing the impeller?
A: If you’re already opening the pump or see wear inside, it’s better to replace everything at once.

Q: What are signs the water pump needs servicing?
A: Weak telltale flow, overheating, or inconsistent water pressure are common signs.

Q: Is this difficult to install?
A: It’s manageable if you’re comfortable removing the lower unit and following a service guide.

Q: Does running in shallow or sandy water affect the pump?
A: Yes, debris can wear out internal parts faster, making full rebuilds more important.

Q: What does it mean this kit supersedes an older part number?
A: It means Yamaha updated the kit with improvements, and this is the current replacement version.