The thermostat works like a valve, opening, and closing in response to temperature. Until the engine reaches a predetermined minimum temperature, the thermostat isolates it from the radiator. The marine engine always loses heat to the radiator and requires longer to warm up without a thermostat. An engine running at a temperature outside its ideal range can harm performance and economy. Simple solutions include changing the thermostat. This Sierra thermostat is designed to work with many Yamaha outboard motors and has a temperature rating of 122degrees F (50degrees C). Sierra has earned the trust of engine makers and boat builders by delivering parts to meet or surpass the specifications of marine engine manufacturers for 50 years.
Key Features:
Product Details:
Temperature Rating: 122°F / 50°C
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