The Mishimoto racing thermostat for the 1998-2006 Volkswagen Beetle 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 23.4°F (13°C) earlier than the stock thermostat at 163.4°F (73°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 1998-2006 Volkswagen Beetle thermostat is backed by our Mishimoto Lifetime Warranty.