Yamaha - Water Pump Repair Kit - Cooling System Service Kit - 6J8-W0078-A1-00

Overview

The Yamaha Water Pump Repair Kit | 6J8-W0078-A1-00 is one of those kits you grab when you want to take care of the whole cooling system in one shot. On older 2-stroke motors, worn pump components can sneak up on you with weak water flow or rising temps. This kit gives you the key pieces to refresh the pump instead of chasing individual parts. If you’re doing maintenance or bringing an older motor back to life, this is a solid place to start.

Key Features

• Complete Pump Service Kit – Includes essential components needed to rebuild and restore water pump performance.

• OEM Fit Precision – Designed to Yamaha specifications for proper fit and reliable operation.

• Restores Cooling Efficiency – Helps bring back strong water flow and proper temperature control.

• Durable Marine Components – Built to handle heat, friction, and long-term use in marine environments.

Engine & Boat Compatibility

• 30 1995 and Older

FAQs

Q1: When should I use a repair kit instead of just replacing the impeller?
A: If gaskets, plates, or internal parts show wear, it’s better to replace everything together.

Q2: What are signs the water pump needs servicing?
A: Weak water stream, overheating, or inconsistent cooling are common signs.

Q3: Does this kit include everything needed for the job?
A: Yes, it includes the core components required to service the water pump.

Q4: Is this considered routine maintenance?
A: Yes, especially on older engines where wear happens faster over time.

Q5: Is installation difficult?
A: It requires removing the lower unit, but it’s a standard repair for most setups.

• Supersessions
  6J8-W0078-01-00, 6J8-W0078-00-00
• Engine Application
  • 30 - 1995 and Older