Zero Sports 'Cool Thermo' Water Thermostat

  • This radiator thermostat from Zero Sports opens at 160 degrees F (71 C) instead of the stock thermostat's 172 F. Zero Sports explains: "The temperature that brings out the best performance from EJ20 turbo is 70C-80C. The stock thermostat opens at 78C and the water circulates after it has become too hot, so it increases beyond 80c during hard driving, causing substantial loss of power." Other performance thermostats open at 154 F, which can cause the engine to run TOO cold -- if the car never leaves warm-up mode, you'll see bad gas mileage and reduced performance. The Zero Sports Cool Thermo's 160-degree setting is just right for street driving AND performance use.

    Fits all 2002-2014 WRX and STI, and 2015+ STI.

  • SKU#: 00408

    Shipping Weight: 1.0 lb

    Manufacturer: Zero Sports

    Category: Cooling System