The ARP 150-2902 Flexplate Bolt Kit for your 2008-2010 Ford 6.4L Powerstroke increase durability and safety. Flexplate bolts play an important role in getting the power from your diesel engine to your transmission. That's why the fastener experts at ARP have developed special bolts that are far superior to OEM hardware. ARP premium grade bolts feature an exclusive, flat 12-point head design and larger than stock shank diameter for increased strength and improved flywheel register. Complete with washers and nuts where applicable.