Yamaha - Thermostat Cartridge Insert - Cooling System Component - 61A-44322-02-00

Overview

Keeping the cooling system working properly is one of the most important parts of maintaining a Yamaha outboard. The Yamaha Thermostat Cartridge Insert 61A-44322-02-00 helps guide and support the thermostat assembly so the engine maintains stable operating temperatures. When these inserts wear or corrode over time, the thermostat may not seat correctly, which can affect how the engine regulates heat. Replacing worn cooling system components like this helps keep water flow consistent and protects the engine during long runs.

Key Features

• Thermostat Cartridge Support – Provides proper seating and alignment for the thermostat assembly inside the cooling system.

• OEM Yamaha Fitment – Designed to Yamaha specifications for correct installation and dependable cooling system operation.

• Cooling System Stability – Helps maintain consistent engine temperature by supporting proper thermostat function.

• Durable Marine Construction – Built to handle constant water exposure, heat cycles, and harsh marine conditions.

• Ideal for Cooling System Service – Commonly replaced during thermostat or cooling system maintenance.

Engine & Boat Compatibility

Compatible with select Yamaha outboard engines that utilize this style of thermostat cartridge insert within the cooling system.

Refer to manufacturer fitment information to confirm compatibility with your specific Yamaha engine model.

FAQ

Q: What does a thermostat cartridge insert do?
A: It supports and positions the thermostat so it opens and closes properly as the engine warms up.

Q: When should this part be replaced?
A: It’s often replaced when servicing the thermostat or if corrosion or wear is found during cooling system maintenance.

Q: Can a damaged insert affect engine temperature?
A: Yes. If the thermostat cannot seat correctly, the engine may run too hot or take longer to warm up.

Q: Is this part exposed to water inside the engine?
A: Yes. It sits within the cooling system and is constantly exposed to circulating water.

Q: Should this be replaced during thermostat service?
A: Many technicians inspect or replace the insert at the same time to ensure the thermostat assembly functions correctly.

• Supersessions
  61A-44322-01-00