Diamond Power Oil Pump works with Buick Escalade Chevrolet Astro Blazer Suburban Camaro Corvette GMC Jimmy Savana Sierra 4.3L 5.0L 5.7L OHV Vortec Same day shipping when purchased before 3pm EST Fits: 1981-2006 Chevrolet Chevrolet Corvette Tahoe 4.3L 5.0L 5.7L OHV Our products are tested and meet or exceed OEM performance requirements Water Pumps are made with the best quality materials (aluminum) required by the manufacturer 2 Year Warranty (This product must be installed by a certified professional mechanic)