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GM 6.2L/6.5L Diesel ARP M12 Head Stud Kit

ARP M12 head studs for GM 6.2L & 6.5L diesels by Pure Diesel Power. These head studs were developed to overcome head gasket failures that can occur in diesel engines. ARP studs are rated at 220,000 psi tensile strength, and provide the clamping force required to keep cylinder heads from lifting due to higher combustion pressures.

The studs are manufactured in ARP's Santa Paula, CA plant from proprietary ARP 2000 material, with threads rolled after heat-treat to provide optimum fatigue strength. They are centerless ground to assure perfect concentricity. The ends of the studs are broached to facilitate easy installation. This feature also enables the cylinder head to be removed in tight quarters. Also included in each kit are heat-treated, chrome-moly steel 12-point nuts and parallel-ground washers. They are black oxide finished for extra durability.


  • ARP 2000 Material
  • 220,000 PSI Tensile Strength
  • Chrome-moly Steel, 12-Point Nuts
  • Parallel-Ground Washers

Kit Instructions

ARP kit number: 130-4062

Lame California Prop 65 Notice
Tags: ARP , M12 , Head , Stud , 6.2l , 6.5l , diesel , gm , 130-4062