Mishimoto Racing Thermostat 2015-2021 WRX / 2014-2017 Forester XT

This Mishimoto racing thermostat will promote greater cooling efficiency in your stock or modified FA20DIT. Once the engine is fully warmed up, the thermostat will open at a lower temperature than standard thermostats. This allows coolant to flow through the engine sooner, which reduces and maintains cooler engine temperatures.