Yamaha - Thermostat Cover - Cooling System Housing - 6CE-12413-B0-9S

Overview

Thermostat covers are one of those parts you don’t think about until you see a leak or start chasing cooling issues. I’ve had engines come in running hot, and it turned out the cover wasn’t sealing right anymore. This piece keeps the thermostat properly housed and sealed so coolant flows the way it should. When it’s tight and in good shape, the engine holds temperature steady and runs without worry.

Key Features

• Secure Thermostat Housing – Protects and encloses the thermostat for proper operation.
• OEM Fitment – Built to Yamaha specifications for precise sealing and alignment.
• Leak-Resistant Design – Helps maintain proper coolant flow without loss.
• Durable Construction – Withstands heat, pressure, and marine conditions.

Engine & Boat Compatibility

Fits Yamaha outboard engines with compatible cooling systems. Commonly used across modern Yamaha outboards on center consoles, bay boats, and recreational vessels.

FAQ

Q: What are signs this thermostat cover is failing?
A: Coolant leaks, overheating, or visible corrosion are common signs.

Q: Can a bad cover cause overheating?
A: Yes, if it doesn’t seal properly, it can disrupt coolant flow.

Q: Should I replace the gasket when installing this cover?
A: Yes, always use a new gasket to ensure a proper seal.

Q: Does saltwater exposure affect this part?
A: Over time, it can lead to corrosion if not maintained.

Q: Is installation difficult?
A: It’s straightforward, but proper sealing and torque are important.

• Supersessions
  6CE-12413-10-9S, 6CB-12413-20-00, 6CB-12413-01-00, 6CB-12413-00-00