The Mishimoto racing thermostat for the Volkswagen Golf 2015-2017 is designed to help your cooling system operate at peak efficiency, whether you're cruising to your local car meet or tearing up the track. Our thermostat begins to open 25.2°F (14°C) earlier than the stock thermostat at 210.2°F (99°C) That allows precious coolant to flow into the radiator and start shedding heat sooner. Couple this thermostat with a Mishimoto performance aluminum radiator and you have the recipe for an engine that runs cool no matter the situation. Like all of our thermostats, this Volkswagen Golf 2015-2017 thermostat is backed by our Mishimoto Lifetime Warranty.