ARP 144-4201 Head Stud Kit for Mopar "A" 12pt ymm_71 Cast Iron/Steel Hub Drill Bit

Cast Iron/Steel Hub Drill Bit Size (actual dim

2L (S52US)

Designed to complement Akrapovic tailpipes

A large number of connecting rod manufacturers have chosen ARP bolts as standard equipment

Flange Inside Diameter 2

ARP 144-4201 Head Stud Kit for Mopar "A" 12pt ymm_71 Cast Iron/Steel Hub Drill BitIt 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