4.3L, to block. 2003-14, to block. 1/2, 3/4 & 1 ton, 1996 new style, gas engine, 4.3, 5.0, 5.7L. May be made from fiber or a rubberized composite material This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Pulley

4.3L. Astro, Safari. 6 cylinder, all. 2003-14. 8.1L. 1/2, 3/4 & 1 ton, 1996 new style, gas engine, 4.3, 5.0, 5.7L. Designed to restore your vehicle's engine cooling system 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

Water Outlet

All models. 4.3l. Silverado, sierra. 4.3l. 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

Thermostat

S-series. 4.3l. 6 cylinder, with high output. Astro, Safari. Cpi, mpi. All models. Express, savana. 2003-14. Silverado, sierra. 4.3l. Incl.Gasket. 1/2, 3/4 & 1 ton, 1996 new style, 4.3, 5.0, 5.7L. Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature

ACDelcoâ„¢ Temp Sensor