Mishimoto 68°C racing thermostat for 2014–2015 Subaru WRX and Forester applications. The racing thermostat opens at a lower temperature than stock to promote earlier coolant flow and help maintain lower engine temperatures; Mishimoto cites activation at 165.2°F versus a typical stock 190.4°F. It is offered as a direct replacement and includes Mishimoto's lifetime warranty.
Mishimoto 14-15 Subaru WRX / Forester 68 Degree Celsius Racing Thermostat