ARP #250-4205 Custom Age 625 head studs / 6.0 Powerstroke FREE shipping


  • Price includes shipping to anywhere in the continental United States.
  • Custom Age 625+ Material
  • 260,000 psi. tensile strength
  • 12 point nuts and parallel ground washers

ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation.

Available on backorder


  • We have these IN STOCK but you need to call as we are having some trouble with our credit card processing online.  (828) 772-0038

Recommended over regular ARP head studs for high horsepower/high performance applications such as racing and pulling competitions.


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