Yamaha – Water Pump Repair Kit | Cooling System Service Kit | 6AW-W0078-00-00

Overview

When you spend enough time around Yamaha outboards, you learn quickly that a healthy cooling system keeps everything running the way it should. This Yamaha Water Pump Repair Kit 6AW-W0078-00-00 gives you the core components needed to restore proper water flow through the engine. It is the kind of maintenance kit many boat owners install during routine service to keep big offshore motors dependable season after season. Whether the boat is running hard offshore or idling through the harbor, keeping the water pump in top shape helps protect the engine from heat and wear.

Key Features

• Genuine Yamaha OEM Components – Built to Yamaha factory specifications for reliable fit and dependable long term performance.
• Complete Cooling System Service Kit – Includes essential parts needed to restore proper water pump operation during maintenance.
• Reliable Water Circulation – Helps maintain steady cooling water flow through the engine during operation.
• Direct Fit Replacement – Designed to install properly within Yamaha water pump assemblies without modification.
• Built for Marine Conditions – Durable components made to handle repeated use in both freshwater and saltwater environments.

Engine & Boat Compatibility

• F300 - 2007-2009
• F350 - 2007-Current
• FL350 - 2010
• LF300 - 2007-2009
• LF350 - 2007-Current

Frequently Asked Questions

Q: How do I know when the water pump needs service?
A: Signs can include weak water flow from the cooling telltale, rising engine temperatures, or overheating warnings while running.

Q: How often should a Yamaha water pump be serviced?
A: Many technicians recommend servicing the water pump every one to two seasons depending on hours, water conditions, and usage.

Q: Can saltwater use affect the water pump system?
A: Yes. Salt buildup, sand, and debris can wear internal pump components faster, which is why regular inspection and service are important.

Q: Is this kit something a boat owner can install?
A: Many experienced owners perform this service themselves, though it typically requires removing the lower unit to access the pump assembly.

Q: Will replacing the water pump help if my engine runs warm at idle?
A: If the current pump components are worn or damaged, installing a fresh repair kit can restore proper cooling water circulation.