ARP Hex Bolt Kits | Multiple Chevrolet Fitments (534-9605)Engine & Accessory Bolt Kit by ARP ARP engine bolt kits come in your choice of polished stainless steel or black oxide chromoly steel bolts with 12 point or hex heads. These kits include the bolts and washers for your engine. Features Fastener Finish: Polished Fastener Material: Stainless steel Fastener Head Style: Hex head Intake Manifold Fasteners Included: Yes Valve Cover Fasteners Included: Yes Timing Cover Fasteners Included: No Oil Pan Fasteners