Description: All models. 5.7l. All models. 5.0l. Without ac. 5.0 & 5.7L, auto trans, standard duty.

Description: Helps seal and maintain pressure in your vehicle's engine cooling system This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors

Description: Astro, Safari. 6 cylinder, 4.3. 4.3L. All models. Thoroughly tested for reliable, leak-resistant performance Uniform wall sections and smooth coolant-flow cavities for efficient operation Coated seals with a stainless steel spring for durability

Description: All models. 5.0l, 5.7l. Exc.Armored Body Equipment. Thick base helps prevent leaks by minimizing warpage Leak-resistant Neoprene O-ring seal Helps your cooling system function properly 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