These premium valve covers are die-cast aluminum, manufactured to GM specifications, and includes GM-designed baffles. They have recessed Bowtie and Chevrolet Emblems, inlaid with classic Chevrolet red and black. Includes baffles and grommets. Fits 1965 to 1996 396-454 Big Block Chevy engines. Sold as one pair. Officially Licensed Chevrolet Performance Parts Product.