Performance Jeeps deserve Jeep performance parts. Keep your rock-crawling CJ cool even in the most demanding environments by upgrading to the Mishimoto racing thermostat. Proper maintenance of the cooling system is a necessity for extended engine life and dependability. A failed Jeep Wrangler thermostat can lead to overheating, accelerated engine wear, and potential internal engine damage. The Mishimoto Jeep CJ Racing Thermostat is precision engineered to provide your vehicle with years of reliable service and optimal cooling efficiency on the street and the trails. 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 (180F) compared to standard thermostats (195F). This allows coolant to flow through the engine sooner, thus reducing and maintaining cooler engine temperatures. Mishimoto Jeep Wrangler thermostats are digitally calibrated, utilize high-quality wax to ensure precise and consistent opening temperatures, and include a gasket for seamless, leak-free installation. As with all our Jeep Wrangler parts, this racing thermostat is guaranteed by the Mishimoto Lifetime Warranty.