Timing Cover Bolts, Chromemoly, Black Oxide, Hex Head, Chevy, Big, Small Block, Kit# 200-1502Securing your timing cover is easier than ever with ARP's timing cover bolt kits. Head Style Hex Fastener Style Bolt Washer Included Yes Fastener Finish Black oxide Fastener Material Chromemoly Quantity Sold as a kit. Notes Fits steel and aluminum timing chain covers.