Water Pump Impeller Service Kit 6H4-W0078 for Yamaha 2 Stroke 40hp 50hp Outboard

Water Pump Impeller Service Kit for Yamaha

This water pump impeller service kit for Yamaha 2-stroke 40-50 hp outboards (OEM reference 6H4-W0078) replaces worn components to keep cooling system efficient.

Overview

This water pump impeller service kit is a complete replacement set for Yamaha 2-stroke outboard engines, ensuring reliable coolant flow in 40 and 50 horsepower models. It contains the impeller and necessary seals to restore water pump function, preventing overheating during extended operation. Suitable for marine mechanics and boat owners maintaining Yamaha outboards.

Built For Performance

• High-quality rubber impeller for durable water displacement
• Includes gasket and O-ring for a positive seal
• Direct replacement for Yamaha 6H4-W0078 part
• Resistant to oil and fuel exposure
• Engineered for consistent performance in marine environments

Fits These Machines

• for Yamaha 40 hp 2-stroke outboard
• for Yamaha 50 hp 2-stroke outboard

On-The-Job Use

• Replaces deteriorated impellers during water pump service
• Maintains cooling system pressure for optimal engine temperature
• Used in both saltwater and freshwater boating
• Restores water flow after impeller wear or damage

Specs At A Glance

Good To Know

Q: Will this kit fit my Yamaha 50 hp 2-stroke? A: Yes, it is designed for Yamaha 40-50 hp 2-stroke outboards, so it will fit your 50 hp model.

Q: Does the kit include the impeller housing? A: No, it includes the impeller, gasket, and O-ring, but not the housing.

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