The Mishimoto racing thermostat for the 2012+ Subaru BRZ / Scion FR-S will promote greater cooling efficiency in your stock or modified FA20. Once the engine is fully warmed up, the Mishimoto racing 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. The Mishimoto BRZ / FR-S racing thermostat is the perfect addition to your street or track car and is a direct replacement for the factory thermostat. As with all of their products, this thermostat includes the Mishimoto lifetime warranty.