Description: Helps prevent leaks in various components of your vehicle This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type

Description: O-Ring. 6 cylinder, with high output. 4.3L. 2nd Design. Dual Thermostat. Diesel. 2003-14. All models. 8 cylinder, 1993-97. 1/2, 3/4 & 1 ton, 1996 new style, 4.3, 5.0, 5.7L. Seals your vehicle's thermostat housing Helps prevent coolant from leaking from the engine This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors