ARP 144-4001 Head Stud Kit for Mopar "A" ymm_47 Delivering a pure racing sound

Delivering a pure racing sound full of emotion

Outlet Diameter: 120 mm

and also significantly better than hardware grades (even Grade 8)

the front part is cast in the in-house foundry and shaped to provide correct clearance of the stock shocks

coupled with enhanced power and torque

ARP 144-4001 Head Stud Kit for Mopar "A" ymm_47 Delivering a pure racing soundIt 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. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat treated to 200, 000 psi. This procedure ensures complete heat