Yamaha - Chrome Pump Kit Water Pump Service Kit 6N0-W0078-0A-00. Overview. Water pump kits are one of those things you don't skip if you want to stay on the water instead of getting towed in. I've seen impellers fail at the worst times, and it usually comes down to overdue maintenance. When you install a fresh kit like this, you get that strong, steady water flow back and peace of mind every time you fire up the motor. It's basic service, but it makes all the difference.. Key Features. • Complete Pump Service Kit - Includes essential components for restoring water pump performance.• Strong Cooling Water Output - Helps maintain proper engine temperature under load.• OEM Fit and Quality - Built to Yamaha specifications for proper installation and reliability.• Durable Marine Materials - Designed to handle heat, friction, and constant water exposure.. Engine & Boat Compatibility. Designed for Yamaha outboard engines requiring water pump maintenance and service. Commonly used across a rang