"Happy Holidays! Our warehouse is closed for the holidays from Dec 22- Jan 9. All orders placed during this time will begin processing on Jan 12. Thank you for your patience!"
Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 200,000 psi for the 8740 material. ARP Pro series kits are also available with hex nuts, and all kits come complete with hardened parallel washers .
Over size washers available for a better torque load distribution
"Happy Holidays! Our warehouse is closed for the holidays from Dec 22- Jan 9. All orders placed during this time will begin processing on Jan 12. Thank you for your patience!"
