ARP Pro Series bolts are cold-forged to ensure molecular integrity, heat treated prior to thread rolling and machining and are rated nominally at 200,000 psi
. These fasteners deliver superior strength and meet the ARP 'ZERO defect-ZERO failure' quality standard. Hardened and parallel ground washers are included to ensure even load distribution and accurate torque readings.
All Pro Series bolts have a reduced wrenching 12 point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing .
You won't find a better quality bolt on the market from any other source.
14 parallel ground washers
1 pack specially formulated Moly based assembly lubricant