Yamaha WATER PUMP REPAIR KIT 663-W0078-01-00 663-W0078-00-00 663-W0078-A0-00

Water Pump Repair Kit for Yamaha

This water pump repair kit, with OEM cross-reference numbers 663-W0078-01-00, 663-W0078-00-00, and 663-W0078-A0-00, restores cooling system performance in Yamaha outboard motors. It includes the impeller and necessary components for a complete water pump service.

Overview

This water pump repair kit for Yamaha outboards is a direct replacement service set containing the impeller, gaskets, and seals needed to maintain proper cooling. It is designed for boat owners and technicians servicing Yamaha outboard motors to prevent overheating and ensure reliable operation on the water.

Built For Performance

• Includes OEM-spec impeller for optimal water flow
• Complete gasket and seal set for a tight fit
• Compatible with multiple Yamaha part numbers
• Marine-grade materials resist corrosion and wear
• All installation hardware included in the kit

On-The-Job Use

• Replacing worn impellers in Yamaha outboard lower units
• Routine water pump service before long trips
• Emergency repairs when overheating occurs
• Used by marine workshops for quick turnaround
• Maintains cooling in saltwater and freshwater conditions

Specs At A Glance

Good To Know

Q: What causes a water pump to fail? A: Wear and tear from debris, sand, or running dry can damage the impeller. Replacing it with this kit prevents costly engine damage.

Q: Can this kit be used on multiple Yamaha models? A: It is designed to fit Yamaha outboards that use these OEM part numbers, so check your engine's specific part number for compatibility.

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