Yamaha - Water Pump Repair Kit - Cooling System - 6E0-W0078-A3-00

Overview

When you’re going into a Yamaha water pump, it usually makes sense to do it right the first time. I’ve seen too many quick impeller swaps turn into repeat jobs because the rest of the components were already worn. A full repair kit like this takes care of everything in one shot and saves you from coming back in later. Once it’s rebuilt properly, you get solid water flow and dependable cooling every time you run it.

Key Features

• Complete Pump 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.
• Matched Internal Components – Designed to work together for consistent fit and operation.
• Durable Marine Materials – 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, 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 inside the pump or see wear, 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 installation difficult?
A: It’s manageable if you’re comfortable removing the lower unit and following a service guide.

Q: Does running in sandy or shallow water affect the pump?
A: Yes, debris can wear out internal components much faster.

Q: What does it mean this part is superseded?
A: It means Yamaha has replaced it with an updated version, but this one may still fit certain setups.

• Supersessions
  6E0-W0078-A4-00, 6E0-W0078-A5-00, 6E0-W0078-A5-00