Yamaha - Water Pump Repair Kit - Cooling System - 6E0-W0078-A2-00

Overview

When you’re servicing the water pump on these smaller Yamahas, it’s usually best to just do it all at once. I’ve seen too many cases where only the impeller gets replaced, and the rest of the worn parts end up causing issues not long after. A full kit like this takes care of everything in one go and saves you from opening it back up again. Once it’s done right, you get solid water flow and peace of mind every time you head out.

Key Features

• Complete Pump Rebuild Kit – Includes all major components needed for a full water pump service.
• Restores Cooling Efficiency – Helps bring water pressure and flow back to proper operating levels.
• Matched Internal Components – Designed to work together for proper fit and consistent performance.
• Durable Marine Construction – Built to handle heat, friction, and debris in real-world conditions.

Engine & Boat Compatibility

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

FAQ

Q: When should I use a full repair kit instead of just replacing the impeller?
A: If you see wear inside the pump or want to avoid repeat issues, a full kit is the better option.

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

Q: Is this something I can install myself?
A: Yes, if you’re comfortable removing the lower unit and following a basic service procedure.

Q: Does running in shallow water affect the pump?
A: Definitely—sand and debris can wear down internal parts much faster.

Q: What’s the benefit of replacing everything at once?
A: It ensures all components are fresh and working together, reducing the chance of early failure.

• Supersessions
  6E0-W0078-02-00, 6E0-W0078-01-00, 6E0-W0078-00-00