ARP
ARP Main Studs for 06+ GM 6.6L Duramax
ARP main stud kits help eliminate main cap walk/fretting and protect the threads in your engine block. They include studs made from 8740 Chromoly steel and heat-treated in-house to 190,000 psi...
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Create A New AccountWarning: This product can expose you to chemicals that are known to the State of California to cause cancer. For more information, visit www.P65warnings.ca.gov.
ARP's Head Studs are used by virtually every top professional engine builder. Simply stated, there’s not a better stud setup on the market today. These head studs are manufactured to exact tolerances, heat-treated, centerless-ground and thread rolled to ensure consistent clamping force strength and durability. Only premium grade 8740 alloy 190,000 psi tensile strength material is used, which is rated far superior to “aircraft” quality alloy steels. Head studs allow easy installation of both cylinder heads and gaskets, eliminating guess work of alignment. Each head stud kit comes with hex head nuts.