Bolt Covers - Black Beautifully designed pieces to cover the raw OEM bolt heads on your engine, transmission, primary and more, Deluxe kits include motor/transmission/primary and select chassis bolt covers, Individual covers are available for a wide variety of bolt and nut styles, Made from ABS material, fasten with silicone; sold separately, Standard kits include motor/transmission/primary bolt covers, Easy to install with included detailed installation instructions, Engine kits include motor bolt covers only