An ACDelco GM Original Equipment Engine Coolant Thermostat O-Ring is a GM-recommended replacement for your vehicle's original component. It seals the gap between the exterior of the thermostat housing and the exterior of the engine. This original equipment engine coolant thermostat O-Ring has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Product Features:Seals the gap between the exterior of the thermostat housing and the exterior of the engine to help prevent leakageGM-recommended replacement part for your GM vehicle's original factory componentOffering the quality, reliability, and durability of GM OEManufactured to GM OE specification for fit, form, and function
