Keep your Dodge/Jeep on the road and running cool by upgrading to the Mishimoto racing thermostat specifically engineered for the 3.7L/4.7L engines. Mishimoto racing thermostats promote greater cooling efficiency by significantly decreasing high engine temperatures. Once the engine is fully warmed up, the Mishimoto low-temperature racing thermostat will open at a lower temperature (180 degree Fahrenheit) compared to standard thermostats (195 degree Fahrenheit). This allows coolant to flow through the engine sooner, thus reducing and maintaining cooler engine temperatures. Whether your vehicle takes you to work every day or hauls your boat on the weekend, the Mishimoto racing thermostat will keep your engine running cool. This thermostat includes the Mishimoto lifetime warranty.