Mishimoto 01-10 Chevy Duramax 2500 6.6L 185 & 191F Degrees Racing Thermostat

This is a set of two Mishimoto high-temperature thermostats for your Chevrolet or GMC 6.6L Duramax truck. If you're in a colder climate or find your engine struggles to warm up properly, these thermostats are a solid option. They're designed to activate at a higher temperature than stock, which means your coolant stays circulating in the engine block longer before heading to the radiator. This helps the engine reach its ideal operating temperature sooner.

By delaying the coolant flow to the radiator, these thermostats help your Duramax engine warm up more quickly, especially beneficial in colder weather. This can lead to more consistent engine performance and potentially better fuel efficiency during the warm-up phase. They are a direct replacement for your factory thermostats, making installation straightforward for anyone comfortable working on their cooling system.