ARP Cylinder Head Stud Kit Pro Series Hex Head GT/Cobra 1996-2004/Mach 1 2003-2004/GT500 2007-2010



  • 190,000 PSI Tensile Strength
  • 8740 Chromoly Construction
  • Black Oxide Finish
  • Made In The USA!
MSRP $621.40
You save 40%

ARP Hex Head Pro Series Cylinder Head Stud Kit for 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 and 2004 GT and Cobra, 2003-2004 Mach 1 and 2007, 2008, 2009 and 2010 GT500 Mustangs.

This Hex Head Pro Series Cylinder Head Stud Kit from ARP is designed and engineered for 2V and 4V 4.6L engines. These ARP High Performance cylinder head studs are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining. This ARP High Performance kit is proudly manufactured in the USA and comes complete with hex head nuts and hardened parallel washers for an even load distribution and accurate torque readings.

ARP's 156-4101 Hex Head Pro Series Cylinder Head Stud Kit Specifications:
Fastener Style: Stud
Undercut Stud: No
Head Style: Hex
Fastener Material: 8740 Chromoly
Fastener Finish: Black oxide
Washers Included: Yes
Fastener Yield Strength: 190,000 psi

- 1996-2004 Mustang GT
- 1996-2004 Cobra
- 2003-2004 Mach 1
- 2007-2010 Shelby GT500

Tech Tip: ARP recommends using the ARP Ultra-Torque Fastener Assembly Lubricant (CJ's Part # 1009910) as opposed to motor oil or other low quality lubricants. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when insufficient lubricants are used.

Please Note: While following the manufacturer's recommended torque sequence, tighten the nuts to the ARP recommended torque specifications using ARP Ultra-Torque Fastener Assembly Lubricant.

Your Mustang is held together by a myriad of nuts, bolts and screws. What happens if that hardware fails, or you need to upgrade it to handle additional performance? With the hardware from ARP, you're getting the best products on the market, and those trusted by Formula 1, IndyCar, NHRA and NASCAR.

Order ARP's 156-4101 Hex Head Pro Series Cylinder Head Stud Kit for your 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 or 2004 GT or Cobra, 2003-2004 Mach 1 or 2007, 2008, 2009 or 2010 GT500 Mustang from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Related Categories: Mustang Parts, Mustang Engine, Mustang Cylinder Heads, Mustang Engine Hardware

Installation Difficulty


Novice skill is required for this installation.

Vehicle Fitment

This product will fit the following Mustang years:

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