ARP offers two styles of Flywheel bolts: premium grade Pro Series, with a 200,000 psi rating and High Performance, with a 180,000 psi rating. They are both heat-treated prior to thread rolling and machining, feature an exclusive, flat, 12-point head design and larger than stock shank diameter for increased strength and improved flywheel register. Kits include washers and nuts where applicable.

Product Features:

• 7/16"-20 Thread Size(s)
• 8740 Chromoly
• Black Oxide
• Ford 289-460
• Chevy 90 Degree V6 & 265-454 With 2PC Rear Seal
• Set of 6
• 1" Underhead Length