Water Pump Repair Kit For Yamaha Outboard 300 350 HP - 6AW-W0078-00-00, 18-3477

Water Pump Repair Kit for Yamaha

This water pump repair kit replaces OEM part numbers 6AW-W0078-00-00 and 18-3477 for Yamaha outboard engines rated at 300 and 350 horsepower, providing a complete set of components to restore cooling system performance.

Overview

This water pump repair kit is designed specifically for Yamaha outboard engines, delivering essential components to maintain proper cooling. It includes the impeller, gaskets, and seals needed to replace worn parts in the water pump assembly. Ideal for Yamaha 300 and 350 HP outboards, this kit ensures reliable operation on the water.

Built For Performance

• Includes precision-molded impeller for consistent water flow
• Contains all necessary gaskets and seals for a complete rebuild
• Made from corrosion-resistant materials for marine environments
• Meets or exceeds OEM specifications
• Easy to install with basic hand tools

Fits These Machines

• for Yamaha Outboard 300 HP
• for Yamaha Outboard 350 HP

On-The-Job Use

• Used for routine maintenance of Yamaha outboard engines
• Commonly replaced during annual service to prevent overheating
• Suitable for saltwater and freshwater operation
• Ideal for boat owners and marine technicians

Specs At A Glance

Good To Know

Q: Is this kit compatible with all Yamaha 300 and 350 HP outboards? A: This repair kit is designed for models using the 6AW water pump housing, but always confirm your engine's serial number for compatibility.

Q: Does the kit include installation instructions? A: While a detailed manual is not included, the parts are designed for straightforward replacement following standard outboard service procedures.

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