Water Pump Repair Kit 1984-2000 Yamaha 40 50HP P50 Pro50 Outboard 6H4-W0078-01

Water Pump Repair Kit for Yamaha

This water pump repair kit fits Yamaha 40HP, 50HP, P50, and Pro50 outboards from 1984 to 2000, providing all necessary components to restore cooling system efficiency.

Overview

This water pump repair kit is a complete replacement set for Yamaha outboards in the 40 and 50 horsepower range, including P50 and Pro50 models. It includes the impeller, gaskets, seals, and wear plates needed to rebuild the water pump and prevent overheating. The kit is designed for years 1984 through 2000, ensuring a precise fit for older Yamaha engines.

Built For Performance

• Includes OEM-grade impeller for reliable water flow
• Contains all gaskets and seals for a full overhaul
• Replaces worn wear plate and key for proper pump operation
• Compatible with 1984-2000 Yamaha 40HP, 50HP, P50, and Pro50
• Direct replacement for part number 6H4-W0078-01

Fits These Machines

• for Yamaha 40HP
• for Yamaha 50HP
• for Yamaha P50
• for Yamaha Pro50

On-The-Job Use

• Rebuild the water pump during routine impeller replacement
• Prevents engine overheating caused by a worn impeller
• Ideal for DIY mechanics servicing older Yamaha outboards
• Use when replacing the lower unit water pump after a season

Specs At A Glance

Good To Know

Q: What is included in this repair kit? A: The kit includes the impeller, gaskets, seals, wear plate, and key, along with any necessary o-rings for a complete water pump rebuild.

Q: How often should the water pump impeller be replaced? A: It is recommended to replace the impeller every two to three years or after 200 hours of use, whichever comes first, to maintain proper cooling.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.