Seller notes

Optimal engine temperature optimizes performance and efficiency. Mercury Marine thermostat by Sierra 18-3549. A malfunctioning thermostat can cause an engine to operate over its optimal temperature, reducing performance and efficiency. With a new thermostat, you'll be back up and running quickly. Mercury and Sear's outboard motors are compatible with this Sierra thermostat, which has a temperature rating of 120 degrees Fahrenheit (F). Key Features: Developed for Mercury maritime applications Con...

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