DmaxStore High Flow Thermostat Kit 2001-2016 Duramax Diesel LB7 LLY LBZ LMM LML

Improve cooling system performance with the DmaxStore High Flow Thermostat Kit, part number DMAX-TK-0116, designed for 2001–2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L LB7, LLY, LBZ, LMM, or LML Duramax diesel engine. These upgraded thermostats are a direct-fit replacement for the factory GM thermostats and are designed to begin opening at the same temperatures as the original components while opening faster and allowing increased coolant flow when additional cooling is needed. The increased flow helps bring coolant temperatures down more quickly as temperatures rise, promotes more consistent operating temperatures, and can help reduce load on the water pump impeller. This makes the DmaxStore High Flow Thermostat Kit an excellent replacement for high-mileage trucks, trucks experiencing elevated coolant temperatures, or during a water pump or complete cooling system service. Why Upgrade to High Flow Thermostats? Unlike simply installing a lower-temperature thermostat, the DmaxStore High Flow design retains the appropriate opening temperatures while improving coolant flow once the thermostats begin to open. Benefits include: - Faster thermostat opening - Increased coolant flow - Helps reduce coolant temperature more quickly under load - Helps maintain more consistent engine operating temperatures - Reduces strain on the water pump impeller - Direct replacement for the factory thermostats - Excellent upgrade during water pump replacement - Ideal for towing, hauling, high-mileage, and severe-duty trucks Kit Includes: (1) High Flow 185°F Thermostat (1) High Flow 180°F Thermostat Replaces / Cross References: GM 97241129 / ACDelco 131-163 GM 97241130 / ACDelco 131-131 Vehicle Fitment: 2001–2004 Silverado/Sierra 2500HD & 3500HD (6.6L LB7 Duramax) 2004.5–2005 Silverado/Sierra 2500HD & 3500HD (6.6L LLY Duramax) 2006–2007 Silverado/Sierra 2500HD & 3500HD (6.6L LBZ Duramax) 2007.5–2010 Silverado/Sierra 2500HD & 3500HD (6.6L LMM Duramax) 2011–2016 Silverado/Sierra 2500HD & 3500HD (6.6L LML Duramax)