Jeeps are well known for their reliability, durability, and longevity. Keep your Jeep on the road and running cool by upgrading to the Mishimoto racing thermostat specifically engineered for the Jeep Grand Cherokee with 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 (82°C) compared to standard thermostats (90.5°C). This allows coolant to flow through the engine sooner, thus reducing and maintaining cooler engine temperatures. Whether your Jeep takes you to work every day or on a trail ride through the mountains, the Mishimoto racing thermostat will keep your engine running cool. As with all our products, this thermostat includes the Mishimoto Lifetime Warranty