Yamaha - Water Pump Repair Kit - F40 - 6BG-W0078-00-00

Overview

The Yamaha 6BG-W0078-00-00 Water Pump Repair Kit is a genuine OEM service kit designed to restore proper cooling system performance on Yamaha F40 four-stroke outboard engines. The water pump plays a critical role in circulating water through the engine to maintain safe operating temperatures and prevent overheating.

Over time, components such as the impeller, seals, and gaskets can wear due to heat, friction, and debris in the water. Routine replacement of these parts helps maintain efficient water flow and ensures reliable engine cooling. This Yamaha repair kit includes the essential components required to service the water pump assembly and restore proper operation, making it a key part of regular outboard maintenance.

Key Features

• Genuine Yamaha OEM Kit – Designed to meet Yamaha factory specifications.

• Complete Water Pump Service Components – Includes essential parts for servicing the pump assembly.

• Restores Cooling System Efficiency – Helps maintain proper engine temperature and water circulation.

• Designed for Yamaha F40 Engines – Ensures correct fitment and dependable performance.

Engine Compatibility

• F40 - 2010 & newer

Kit Includes

• Pump Housing Cover – 63D-44312-00-00
• Water Pump Gasket – 63D-44316-00-00
• Insert Cartridge – 63D-44322-00-00
• Cartridge Outer Plate – 63D-44323-00-00
• Water Seal Damper 2 – 663-44366-00-00
• Impeller – 6H4-44352-02-00
• (4) Bolts with Washers – s90119-08M15-00
• Woodruff Key – 90280-03M03-00
• O-Ring – 93210-59MG7-00

Why is this prop a strong choice vs. alternatives?

• Complete OEM Service Kit – Includes critical components needed for proper water pump maintenance.

• Protects Against Engine Overheating – Restores water circulation through the cooling system.

• Exact Yamaha Fitment – Designed specifically for F40 four-stroke outboard models.

• Essential Preventative Maintenance – Regular replacement helps extend engine life and reliability.

FAQ

Q: What does the water pump do on an outboard engine?
A: It circulates cooling water through the engine to maintain proper operating temperature.

Q: When should the water pump be serviced?
A: Yamaha typically recommends inspecting or replacing the impeller and pump components annually or every 100 hours.

Q: Why replace the entire kit instead of only the impeller?
A: Replacing the full kit ensures seals, gaskets, and pump components are also refreshed for optimal performance.

Q: Is this a genuine Yamaha repair kit?
A: Yes. The 6BG-W0078-00-00 is a genuine Yamaha OEM water pump repair kit.

Q: What engine is this kit designed for?
A: It is designed for Yamaha F40 four-stroke outboards from 2010 and newer.

• Supersessions
  6BG-W0078-01-00, 6BG-W0078-01-00
• Engine Application
  • F40 - 2010 & newer