ARP's Professional Series Head Stud Kits are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining and meet the ARP "ZERO defect - ZERO failure" quality standard. These Professional Series head stud kits are designed to add superior strength to the 6.2L HEMI. ARP Pro Series kits include 12-point nuts, and all kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.
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