Yamaha - Water Pump Repair Kit - Engine Cooling System Service Kit - 68T-W0078-00-00

Overview

This is one of those kits I always recommend doing before it becomes a problem. The water pump is the heart of your cooling system, and when it starts to wear, you don’t always get much warning. I’ve seen guys push it too long and end up overheating on the water when it could’ve been avoided. A full kit like this just gives you peace of mind knowing everything in that pump is fresh and ready to go.

Key Features

• Complete Service Kit – Includes essential components needed to restore proper water pump function.
• Restores Cooling Performance – Helps maintain strong and consistent water flow through the engine.
• OEM Matched Components – Designed to work together for proper fit and reliable operation.
• Durable Marine-Grade Materials – Built to handle heat, friction, and harsh water conditions.

Engine & Boat Compatibility

Yamaha Outboard Models – Varies by application (confirm by part number)

FAQ

Q: When should I replace my water pump components?
A: Most boaters do it every season or around 100 hours, especially if running in tough conditions.

Q: What are the signs my water pump needs service?
A: Weak telltale stream, overheating, or inconsistent water flow are the big ones.

Q: Is it better to replace everything instead of just the impeller?
A: Yes, a full kit ensures all wear components are fresh and working together properly.

Q: Has this kit been updated or replaced?
A: Yes, this kit has been superseded by 68T-W0078-01-00, which is the current replacement.

Q: Can I install this kit myself?
A: If you’re comfortable removing the lower unit, it’s a manageable job—just pay attention to alignment and assembly order.

• Supersessions
  68T-W0078-01-00, 68T-W0078-02-00, 68T-W0078-02-00