The Mishimoto racing thermostat for the 2009+ Nissan GTR will promote greater cooling efficiency for twin turbocharged engines. The Mishimoto street thermostat opens at a lower temperature than OEM thermostats to maintain optimal temperatures, even under extreme driving conditions. Once the engine is fully warmed up the Mishimoto GTR thermostat will open up at 66°C, allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures.Fits the 2009+ Nissan GTRLower activation temp allows coolant to flow through the engine earlierMaintains lower temperatures and extends engine lifeMishimoto Activation: 154.4°F (68°C)Mishimoto Lifetime Warranty