The Mishimoto Chevrolet Duramax high temperature thermostats activate at a higher temperature than the OEM thermostats, making them the perfect solution for Duramax owners who live in colder climates, or have trouble reaching operating temperatures. Activating at a higher temperature means the thermostats will allow the coolant to stay in the engine longer delaying the coolant flowing through the radiator, which allows the engine to warm up sooner.

Features:
•Faster warm-up time
•Great for those in cold climates


Includes:
•1 - 185° F Thermostat
•1 - 191° F Thermostat
•Limited Lifetime Warranty