Mishimoto MMTS-BRZ-13 Subaru BRZ Racing Thermostat, 2013+ Fits the 2013+ Subaru BRZ and Scion FR-S Activates at lower temperature so coolant flows through system earlier Allows for cooler engine temperatures Mishimoto Activation: 194F (90C) / OEM Activation: 203 F (95C) Mishimoto Lifetime Warranty