Products Showing Parts for — {{ }}

No Results Showing Parts for — {{ }}
USD 425
Part #: ARP250-4202

ARP 250-4202 Diesel Head Stud Kit

2003-2007 Ford 6.0L Powerstroke
Part #: ARP250-4202
★★★★★ ★★★★★ 3 Reviews
Our Recommendations Compatible Products
Scroll to View More


The ARP 250-4202 Head Studs are a must-have upgrade for your 03-07 Ford 6.0L Powerstroke. These extra heavy duty studs are rated at 220,000 psi tensile strength and provide the clamping force required to keep your 6.0L Powerstrokes cylinder heads from lifting due to higher combustion pressures.

Manufactured in ARPs Santa Paula, CA plant from proprietary ARP 2000 material, with threads rolled after heat-treating to provide optimum fatigue strength. They are centerless ground to assure perfect concentricity. Also included in each kit are heat-treated, chrome-moly steel 12-point nuts and parallel-ground washers, with a black oxide finish for extra durability. ARP also offers the Inner Row Head Bolts as an add-on to compliment this head stud kit (sold separately, see related items below).

  • 220,000 PSI Tensile Strength
  • Replaces Factory Head Bolts
  • Black Oxide Finish
Note: ARP is aware of forum postings providing incorrect torque values. Please follow the included installation instructions for proper torque specifications and tightening sequence.


  • MFG. Number 250-4202
  • Manufacturer Name ARP
  • Shipping Weight 13.00 lb.
  • Shipping Length 8 in.
  • Shipping Width 11 in.
  • Shipping Height 3 in.
  • Fuel Type Diesel
  • UPC 672036032456
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
5.0/5 Stars out of 3 Reviews
Well worth it
(USA) | November 10th, 2018
I've used ARP products a lot over the years, and on the 6.0 they're especially good. Top-quality steel alloy, made in the US, and they take and hold torque with the lube. I torqued to 230lbf (between ARP's old and new advice) at night, then confirmed all of them in the morning, and they held as expected. Given the learnings over time I'd make sure it look up ARP's latest advice of course. The install is tricky with the cab on, but there are lots of good articles describing tricks like zip-ties to hold them up in certain places. Through taking it slow with a custom gantry crane I was able to get really good results.Now ~4000 miles in there are no signs of problems on new factory replacement blue gaskets on a 2003 (early build) 6.0, and it started up the first time. The original gaskets were stamped with a 2003 date code and lasted 110k, and I hope with ARP studs the new gaskets should last forever. Factory tune... for now. Thanks XDP!
arp headstuds
(Unknown) | April 8th, 2008
best 500 bucks ive spent on my 6.0 so far
ARP250-4202 Review
(Unknown) | January 21st, 2007
No summary provided.

Write a Review

Include Your Order Number For a Chance to Win a $100 Gift card

Overall Rating

Your Information

Email Address will not be made public.

Customer Photos

Customer Photos

See what others built Submit your photo

Questions and Answers

Ask XDP a Question about this product (Allow 24-48 hours for reply)

Most Popular Questions

What are they made out of?
View Staff Answer 

The ARP 250-4202 Diesel Head Stud Kit is made from a proprietary ARP 2000 material. ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material than 8740. While 8740 and ARP2000 share similar characteristics – ARP2000 is capable of achieving a clamp load at 220,000 psi. ARP2000 is used widely in short track and drag racing as an up-grade from 8740 chrome moly in both steel and aluminum rods. Stress corrosion and hydrogen embrittlement are typically not a problem, providing care is taken during installation.

Is there a difference in size, 18 or 20mm my truck is a 2003 Is this the correct kit for a 2003 6.0
View Staff Answer 

The ARP 250-4202 DIESEL HEAD STUD KIT will fit all 2003-2007 Ford 6.0L Powerstroke engines regardless of the 18mm or 20mm dowel size in the heads.