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FORD 4.0L XR6 INLINE6 M12 HEAD STUD KIT
These head stud kits feature premium grade ARP 2000 material (Not 8740 material as all previous kits) that is rated at 220000 psi tensile strength.
These are a direct replacement for the OEM head bolts. No drilling and tapping of the cylinder block required.
This kit includes a set of fourteen ARP2000A M12 head studs that replace the original head bolts, fourteen parallel ground washers, fourteen chrome moly steel 12 point nuts and a 1/2 oz. pack of ARP Ultra-Torque fastener assembly lubricant.
They are heat-treated prior to thread rolling and machining and are rated at a whopping 220000 psi.