65N-W0078-A1-00 supercedes 65N-W0078-A0-00

Yamaha - Water Pump Repair Kit - Cooling System Service Kit - 61A-W0078-11-00

Overview

If your cooling system isn’t pushing water like it should, this is one of those jobs you don’t want to put off. This Yamaha water pump repair kit is built to bring your cooling system back to proper flow and pressure, especially on older two-stroke engines that rely on steady circulation. It’s a solid kit that covers the key wear components, so you’re not chasing down parts one by one. Once installed, you’ll notice a stronger tell-tale stream and more consistent engine temps.

Key Features

• Complete Service Coverage – Includes essential internal components needed for a proper water pump rebuild.

• Improved Water Flow – Restores consistent cooling circulation to help prevent overheating.

• OEM Yamaha Fitment – Built to match factory specifications for reliable installation and performance.

• Durable Marine Materials – Designed to handle constant water exposure and demanding use.

Engine & Boat Compatibility

• D150
• DX150
• B115 1997-1999

FAQ

Q: What are signs my water pump needs repair?
A: Weak or no water stream, rising engine temperature, or inconsistent cooling are the most common signs.

Q: Should I replace all components or just the impeller?
A: It’s best to replace all wear parts together to avoid repeat failures and ensure proper sealing.

Q: How often should I service the water pump?
A: Most techs recommend checking it every season or around every 100 hours of use.

Q: Is this kit suitable for saltwater use?
A: Yes, but regular flushing after use helps extend the life of the components.

• Engine Application
  • D150
  • DX150
  • B115 - 1997 to 1999