ARP Head Stud

If you are running in excess of 45 PSI on your 12V Cummins, your stock headbolts are in serious danger of stretching, causing head gasket failure. ARP diesel headstuds are good insurance against head gasket failure.Don't let a blown head gasket ruin your day at the track.

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, theres 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% (thats 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.