Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/

LMM/LML Duramax Diesel

The Mishimoto Duramax high temperature(cold climate) 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. This cold climate thermostat opens at 185/191 vs. OE applications of 180/185.
Includes:

• 1 set of Cold Climate thermostats

DmaxStore Note:

• The oil filler tube and upper coolant pipe seals are not included. They are highly recommended to be replaced during a thermostat replacement to prevent leaks.