Flywheel Bolt Kit by ARP These Pro series flywheel bolts from ARP give you all that you need to bolt in your flywheel with confidence. They\’re much stronger than OEM hardware, are forged from aerospace alloy, and are heat-treated prior to thread rolling and machining. These bolts feature an exclusive, flat 12-point head design and a larger-than-stock shank diameter for increased strength and improved flywheel register. Features Thread Size: M12 x 1.5 Washer Included: No Head Style: External 12-point Fastener Finish: Black Fastener Material: 8740 chromoly Benefits Much stronger than OEM hardware Forged from aerospace alloy Heat-treated prior to thread rolling and machining Please Note: Designed to be used with a DOHC S14 engine with a dual mass flywheel Applications 1988 – 1991 BMW 3-Series What\’s In The Box? 8 – Bolts Warranty Manufacturers Standard Warranty