ARP Head Studs - 03-07 Ford 6.0L Powerstoke (Custom Age 625+) - 250-4205

Thoroughbred Sku #: ARP250-4205
Manufacturer Sku #: 250-4205

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Product Details

Product Name: ARP Head Studs
Manufacturer: ARP
Manufacturer Part #: 250-4205
Thoroughbred Diesel Part #: ARP250-4205
Fitment Notes: ARP Head Stud Kit - 03-07 Ford Powerstroke 6.0L (Custom Age 625+) - 250-4205
Head Stud Material: Custom Age 625+

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.

ARP 250-4205 includes a set of twenty Custom Age 625+ head studs, twenty parallel ground washer, twenty 8740 chrome moly steel 12 point nuts and ten 8740 bolts and washers that secure the intake side of the head to the block. This kit also includes a 1/2 oz. pack of AP Ultra-Torque fastener assembly lubricant.

All Custom Age 625+ studs are centerless ground, heat treated prior to thread rolling and machining, and are nominally rater at 270,000 psi. These fasteners deliver a 40% increase in tensile strength over the OEM Torque to Yield (TTY) head bolts.

ARP 250-4205 Features:

  • Custom Age 625+ Material
  • 260,000 psi. tensile strength
  • 12 point nuts and parallel ground washers
Socket Size(s) 11/16 12pt, 10mm 12pt, 3/16 Allen


  • What is the HP rating for the 2000 studs?

    Ken Barrett | 1/31/2022

    They do not have a hp rating. ARP 2000 have a 60 psi boost rating.

  • I have a early 2003 F250 is it deferent than a later model? I would think so. Looking to make sure I get the right part

    Brian Renfroe | 11/27/2021

    Yes, do you have the 7.3l or 6.0l engine. This kit is for the 6.0l engine.

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