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Head Stud Kit; Hex (96-04 4.6L)

Item 18238
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Ship to: Ashburn - 20149
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Upgraded Hardware
      • Stud Design with Hex Head Nuts
      • Made from 8740 Chromoly Steel
      • Black Oxide Finish
      • Rated at 190,000 psi
      • Made in the USA
      • Fits 1996-2004 GT, Bullitt, Mach 1, and SVT Cobra


      Performance Upgrade. Securely mount your Mustangs cylinder heads by replacing that old weak stock hardware with high strength ARP Fasteners. ARP Fasteners are ideal for high performance street and track Mustangs.

      Premium Quality. Made in the USA from 8740 chromoly steel with a black oxide finish to resist corrosion, these ARP High-Performance Series Cylinder Head Studs are hardened to a tensile strength of 190,000 psi to provide superior strength for long-lasting performance. This kit includes head studs, insert washers and nuts.

      Application. This ARP hex Head Stud Kit is designed for use on 1996 to 2004 Ford Mustang equipped with the 4.6L modular engine, including the GT, Bullitt, Mach 1 and SVT Cobra models.

      Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

      MPN# 156-4101

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (10)

      Write a Review

      Ratings Summary

      5.0 out of 5 overall rating from 10 customers

      • June 08, 2019

        5 1998 GT - CrazyRay

        Great kit

        This is a great kit and came in handy when replacing the factory TTY bolts after doing the PI head swap on my '98 SN-95 Mustang!

        Helpful (0)
      • April 17, 2018

        5 2001 Bullitt - Joseph31

        Look great

        They look great and can’t wait to get my bullitt back

        Helpful (10)
      • November 04, 2017

        5 2002 GT - Steeda01

        ARP Head Stud Kit

        Not much to say here. If you want the best in automotive fasteners buy ARP.

        Helpful (10)
      • April 25, 2017

        5 1998 Cobra - MatthewD

        Easy install!

        Be sure to get a long tap to clean threads. Also, assembly lube comes in the box even tho it isn't listed.

        Helpful (9)
      • May 11, 2016

        5 1999 GT - Mayo


        Headstuds fit perfectly on my 03 mustang gt engine. No problems installing at all.

        Helpful (11)
      • August 27, 2015

        5 2004 GT - Ndn529

        It's ARP what's not to like

        picked up these arp head studs for my boost build, fast shipping like always thanks am you rock, quality is not cheap or junk at all. I recommend using the moly lube when torquing down the heads.

        Helpful (10)
      • July 11, 2014

        5 2004 Cobra - AMCoalK

        Only the best!

        ARP Head studs are top notch. Reusable and the best of quality. High recommended!

        Helpful (11)
      • February 01, 2013

        5 2003 GT - Dan2v

        ARP only way to go

        ARP Headstuds are the only way to go if for any reason you have to tear apart your engine or heads. Especially if your pushing more than 500 horses. Factory ford bolts are one hit wonders, but you can reuse the arp studs over again.

        Helpful (12)
      • January 21, 2013

        5 2003 GT - flyer58

        top quality product.

        Very high quality product,reusable and includes lube. Just what you would expect from ARP and American Muscle.

        Helpful (10)
      • November 13, 2012

        5 2003 GT - 03gt03

        Best on the market

        Definitely the best head bolts money can buy. Re-usable and very sturdy build. I would recommend them to anybody that has a pony that puts power to the ground

        Helpful (11)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      What's the difference between these and the 12 point

      • The hex ARP Head Stud Kit uses a 6 point stud design, while the 12 Point ARP Head Stud Kit uses a 12 point stud design.

      Helpful (0)

      What horsepower are these good for compared to the arp 2000 head studs? in the process of building a motor for a 300 shot and dont want the heads lifting or issues with fasteners. thanks

      • This ARP Head Stud Kit is closer to factory and would not be recommended for that kind of build anticipating higher power numbers or taking that big of a nitrous shot. ARP would recommend their part number: 256-4001.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (20) Studs
      • (20) Washers
      • (20) Nuts

      Will It Fit My Mustang

      • Bullitt - 01
      • Cobra - 96, 97, 98, 99, 01, 03, 04
      • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04
      • Mach 1 - 03, 04

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