Description
The Gasket Genius thermostat cover gasket set fits Yamaha 75 - 225 HP outboard engines. The thermostat cover gasket seals the joint between the thermostat cover and the cylinder head, ensuring cooling water flows through the housing without leaking as the thermostat regulates engine operating temperature. A worn, hardened or damaged thermostat cover gasket allows water leakage at this joint, which can lead to coolant loss and reduced control over engine operating temperature, potentially causing the engine to run too hot or too cold. It is good practice to replace this gasket set whenever the thermostat is removed for servicing.
Fits specified Yamaha models:
- Yamaha 75 HP outboard
- Yamaha 90 HP outboard
- Yamaha 115 HP outboard
- Yamaha 130 HP outboard
- Yamaha 150 HP outboard
- Yamaha 175 HP outboard
- Yamaha 200 HP outboard
- Yamaha 225 HP outboard
Replaces part number:
- 688-12414-00
- 688-12414-A1
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