Yamaha - Water Pump Impeller - 6GR-12451-00-00

Overview

The Yamaha 6GR-12451-00-00 Water Pump Impeller is a genuine original equipment manufacturer component designed to circulate cooling water through the engine and maintain proper operating temperature. The impeller is a critical part of the water pump system, using flexible blades to draw water from the lower unit and push it through the engine’s cooling passages.

A properly functioning impeller ensures that cooling water flows continuously while the engine is running, helping prevent overheating and protecting internal engine components. Over time, impeller blades can wear, stiffen, or crack due to heat, debris, and regular use. Replacing the impeller during routine water pump service helps maintain reliable cooling system performance and supports long term engine durability.

Key Features

• Genuine Yamaha Original Equipment Manufacturer Component – Built to Yamaha factory specifications for proper fit and reliable operation.

• Essential Cooling System Part – Circulates cooling water through the engine to maintain safe operating temperatures.

• Flexible Impeller Blade Design – Efficiently moves water through the cooling system while the engine is running.

• Durable Marine Construction – Designed to withstand heat, friction, and continuous water exposure.

Compatibility

Compatible with select Yamaha outboard engines that utilize this water pump impeller.

Why is this prop a strong choice vs. alternatives?

• Original Equipment Manufacturer Yamaha Fitment – Designed specifically for Yamaha water pump systems.

• Protects Engine From Overheating – Maintains consistent water circulation through the cooling system.

• Supports Reliable Engine Operation – Helps ensure stable engine temperature and performance.

• Essential Preventative Maintenance Part – Routine replacement helps extend engine life and reliability.

Frequently Asked Questions

Q: What does a water pump impeller do?
A: It rotates inside the water pump housing to pull water into the cooling system and circulate it through the engine.

Q: When should a water pump impeller be replaced?
A: Many technicians recommend inspecting or replacing the impeller annually or after approximately one hundred hours of operation.

Q: What happens if an impeller fails?
A: A failed impeller can stop water circulation, which may cause the engine to overheat.

Q: Is this a genuine Yamaha part?
A: Yes. The 6GR-12451-00-00 is a genuine Yamaha original equipment manufacturer water pump impeller.

Q: Is this typically replaced during water pump service?
A: Yes. The impeller is commonly replaced during routine water pump maintenance to ensure proper cooling system operation.