Cylinder Head Stud Kit for 396-402-427-454 Cast iron OEM, Mark IV w/ World Products Merlin heads - 8

Cylinder Head Stud Kit for 396-402-427-454 Cast iron OEM, Mark IV w/ World Products Merlin heads - 8It is for good reason that virtually every top professional enginebuilder relies on ARP Pro Series head studs for their all out competitionpowerplants. Simply stated, theres not a better stud setupon the market today. For openers, ARP only uses premium grade 8740 alloy anda proprietary ARP2000 alloy that are rated far superior to aircraftquality alloy steels. Secondly, each stud is placed verticallyinto special racks and precisely heat treated to

Fittings are available with female pipe threads

in conjunction with aftermarket I-beam rods

premiumgrade aerospace chrome moly steel

which gives themabout 2000% (that’s twenty times) better fatigue strength thanthose studs that are threaded prior to heat-treat (a very commonindustry practice)

Our special purpose washers are constructed from either premium chrome moly with a black oxide finish or polished ARP stainless steel and are hardened and parallel-ground

and meet theARP “ZERO defect – ZERO failure” quality standard

has been applied

Hardened parallel-ground washers are included with each kit

Studs are preferred by many Pro engine builders because they eliminate the chance of pinching gaskets and contribute to easier engine assembly

000 psi rating and theHigh Performance Series is rated at 180

There are many important reasons to use ARP main stud kits

or if there is deformation