NEW GM Engine Coolant Thermostat Kit 14-20 Silverado Sierra Tahoe Yukon 12674639Condition: NEW NEW TAKE OFF The GM 12674639 Water Pump Outlet Assembly with Thermostat is designed for vehicles such as the Cadillac Escalade Chevrolet Silverado Suburban Tahoe and GMC Sierra 1500. Engineered to rigorous General Motors standards it includes a gasket housing and thermostat ensuring optimal performance and reliability for 5. 3L engines. This assembly improves engine cooling efficiency and is critical for maintaining proper engine