Engine Coolant Temperature Sensor

The ACDelco 12559336 is a Genuine GM engine coolant thermostat engineered to precisely regulate your vehicle's engine temperature by controlling the flow of coolant through the radiator. As a direct replacement part, it is designed to meet or exceed the specifications of the original equipment, specifically replacing part number 12554977. This thermostat is built to GM's exact standards, ensuring the quality, longevity, and fitment expected from original parts. It has undergone stringent quality testing to guarantee safety, durability, and performance comparable to the component it replaces. The thermostat measures 3.1 x 3.2 x 3.1 inches and weighs 0.60 pounds. This genuine GM part is guaranteed by GM's factory warranty, providing peace of mind for your repair. It is specifically designed for a wide range of 1996-2002 General Motors vehicles equipped with the 8 Cyl 6.5L Diesel engine. Specific models include various Chevrolet C1500, C2500, C3500, Express, K1500, K2500, K3500, Suburban, and Tahoe configurations, as well as GMC C1500, C2500, Suburban, and Yukon models.