S-series. 4.3l. 4.3L, manual trans. Auto trans. Lightweight; the radiators have a positive heat transfer to weight ratio Corrosion-resistant aluminum designed core helps optimize the radiators long lasting service life This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Filler Cap

S-series. Blazer/Sonoma/S10. Helps seal and maintain pressure in your vehicle's cooling system for vehicle safety

Water Pump

S-series. 4.3l. Astro, Safari. 6 cylinder. All models. 5.7L. Silverado, sierra. 4.3l. Incl.Gaskets. Express, savana. 7.4l. 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

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

Fan Blade

S-series. 4.3l. Without 19.5 inch diameter. 6 cylinder, with ac. Astro, Safari. All. 4.3L, with ac. 2003-14. Express, savana. 4.8l. 6.0L. Hummer H2. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors