Billet Specialties Profile Series Modular LS valve covers bring classic styling to a modern motor. These innovative 2-piece design covers retain the coil packs and harness in the factory location while concealing them under the top cover and routing the wires out the side port holes. Valve covers feature ARP stainless hardware fasteners with a hidden oil fill hole. Each valve cover is precision machined from a 45lb. block of 6061-T6 aluminum on a multi-axis mill then finished with Billet Specialties' award winning mirror polish or black anodized finish.