Water Pump and Thermostat Assembly

The ACDelco 12674639 is a genuine GM outlet assembly, complete with a water pump and thermostat, designed as a direct replacement for specific vehicle applications. This component is engineered and rigorously tested by General Motors to ensure reliability and optimal performance, adhering to the same high standards as the original equipment. It directly replaces GM part numbers 12666569, 12671393, and 12657137, offering a seamless integration into your vehicle's cooling system. This assembly includes the thermostat and gasket, ensuring you have all necessary components for a complete installation. It is designed for a variety of GM vehicles, including Cadillac Escalade (2015-2020, 6.2L), Chevrolet Corvette (2014, 6.2L), Chevrolet Silverado (2014-2019, 4.3L, 5.3L, 6.2L), Chevrolet Suburban (2015-2020, 5.3L, 6.2L), Chevrolet Tahoe (2015-2020, 5.3L, 6.2L), GMC Sierra (2014-2019, 4.3L, 5.3L, 6.2L), and GMC Yukon (2015-2020, 5.3L, 6.2L). Detailed fitment information, including specific cab configurations and engine options, is available to ensure compatibility. Installation involves draining the cooling system, removing the air intake duct, and carefully detaching hoses from the thermostat housing. The process includes cleaning mating surfaces, installing a new o-ring seal, and tightening bolts to the specified torque. The operating temperature for this thermostat is 207 degrees Fahrenheit. GM Genuine Parts are validated to work with your vehicle's safety systems, and GM engineers design these parts specifically for Chevrolet, Buick, GMC, or Cadillac vehicles.