Product Information

To overcome head gasket failure in your Ford 6.0L Powerstroke diesel, ARP offers extra heavy-Duty head studs 250-4202

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there’s not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “”aircraft”” quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

These 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.

Specifications
Socket Size(s) 11/16 12pt, 3/16 Allen

ARP 250-4202 Key Features:

Chrome moly steel 12-pt nuts & parallel-ground washers included
Broached stud ends install & make cylinder head removal easier
Centerless ground to assure perfect concentricity
Threads rolled after heat treatment for optimum fatigue strength
Ample clamping force prevents cylinder heads from lifting
Rated at 220,000 psi tensile strength