Yamaha - Chrome Pump Kit - Water Pump Service Kit - 6E5-W0078-3A-00

Overview

When it comes to cooling on these older Yamahas, I don’t take chances—if the pump’s questionable, it gets rebuilt. I’ve seen engines overheat fast from a weak or worn pump, especially after sitting or running in dirty water. This kit gives you what you need to freshen things up and keep water moving like it should. Do the service, and you’ll run with a lot more confidence out on the water.

Key Features

• Complete Water Pump Kit – Includes key components needed to restore cooling system performance.
• Strong Cooling Water Flow – Helps maintain proper engine temperature under load.
• Durable Marine Components – Built to handle heat, debris, and constant water exposure.
• Consistent Pump Performance – Supports reliable operation across a range of conditions.
• Exact Yamaha Fitment – Matches factory specifications for proper installation and function.

Engine & Boat Compatibility

Designed for Yamaha outboard engines utilizing water pump systems requiring service or rebuild. Commonly used across a range of Yamaha two-stroke outboards in recreational and commercial marine applications. Suitable for freshwater and saltwater environments where dependable cooling performance is critical.

FAQ

Q: What are signs the water pump needs rebuilding?
A: Weak water stream, overheating, or inconsistent cooling are the main signs.

Q: How often should I service the water pump?
A: Typically once a year or every 100 hours, depending on usage.

Q: Any tips for installing this pump kit?
A: Install the impeller in the correct rotation and lubricate it during assembly.

Q: Why replace more than just the impeller?
A: Full kits help ensure proper sealing and longer-lasting performance.

Q: How does debris affect the pump?
A: Sand and debris can wear internal parts faster and reduce efficiency.

• Supersessions
  6E5-W0078-2A-00