Custom Age 625+® head stud kit for 2004 & later Chevy Gen lll/LS series small block applications.
a set of twenty Custom Age 625+® head studs, twenty parallel ground washers, twenty 8740 chrome moly steel 12 pt nuts, ten 8740 8mm studs and the appropriate nuts and washers which secure the intake side of the cylinder head to the engine block. The kit also includes a 1/2 oz. pack of ARP Ultra-Torque fastener assembly lubricant.
All Custom Age 625+® studs are centerless ground, heat treated prior to thread rolling and machining, and are nominally rated at 270,000 psi. These fasteners deliver a 60% increase in tensile strength over the OEM Torque to Yield (TTY) head bolts.