Mishimoto 08-10 Polaris Ranger Performance Thermostat 74C/165FWhether you're tearing up the trails or hauling hay in the fields, you need your Polaris Ranger 400 or 500 to stay at the optimal temperature. Long periods of idling and low speed high load driving can cause engine temps to creep up if your Ranger's cooling system isn't maintained with quality parts. Luckily, Mishimoto has you covered with this low temp thermostat for your 2007 2015 Polaris Ranger 400 or 500. Our thermostat fits just like stock and