ARP 89-98 Dodge 5.9L Cummins 12mm Cylinder Head Stud Kit

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. 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. ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). You wont find a better quality stud on the market from any other source.

Highlights

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