SKU: 256-4201 | UPC: 672036024499
ARP Ford Modular 4.6L 2-Valve &. 4-Valve 12-Point Head Stud Kit 1996-2011 Ford Mustang
ARP 256-4201 head stud kit upgrades Ford Modular 4.6L engines with 2-valve and 4-valve heads found in performance Mustangs. This complete kit replaces stock head bolts to handle increased cylinder pressures from turbo supercharger or stroker builds. Install on 1996-2011 Ford Mustang GT Cobra and Shelby models for dependable head sealing under extreme conditions.
Key Features
- ARP2000 Alloy Studs: Forged from high-tensile ARP2000 material with 220,000 psi tensile strength to resist stretch and fatigue
- 12-Point Nuts: Chrome-moly steel nuts with 12-point design for precise wrench fit and accurate torque application
- Hardened Steel Washers: Parallel-ground washers distribute load evenly and prevent galling on aluminum heads
- Black Oxide Finish: Provides corrosion resistance and reduces friction during assembly
- Complete Kit: Includes 20 studs M11 x 1.5 thread 7.900 in length 10 nuts 20 washers for both cylinder heads
Product Notes
- Use ARP Ultra-Torque fastener lubricant on threads and under nut faces for correct preload
- Torque studs to ARP specifications 75 ft-lbs plus 110 degrees in sequence
- Kit weighs 4.85 lbs and ships in protective packaging
Installation Notes
- Professional installation recommended.
- Chase cylinder head bolt holes with 7/16-14 tap and vacuum debris before install
- Compatible with MLS or composite head gaskets ARP recommends MLS for high performance
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1996-2007 | Ford | Mustang | GT |
| 2001 | Ford | Mustang | GT Bullitt |
| 2007 | Ford | Mustang | Shelby GT |
| 2007-2011 | Ford | Mustang | Shelby GT500 |
| 2008-2009 | Ford | Mustang | Shelby GT500KR |
| 1996-1999 | Ford | Mustang | SVT Cobra |
| 2001 | Ford | Mustang | SVT Cobra |
| 2003-2004 | Ford | Mustang | SVT Cobra |
| 2003 | Ford | Mustang | SVT Cobra 10th Anniversary |
Why Choose ARP?
- ARP fasteners power NHRA Top Fuel dragsters and NASCAR engines worldwide
- Each stud precision-rolled threads for consistent clamp force
- Engineered and manufactured in the USA with strict quality controls
Frequently Asked Questions
- Q: Will this kit fit both 2-valve and 4-valve 4.6L Modular heads?
A: Yes ARP 256-4201 fits Romeo and Windsor 2V/4V heads on 4.6L engines in listed Mustangs - Q: What material are the studs made from?
A: Studs forged from ARP2000 alloy with 220,000 psi tensile strength and 174,000 psi yield strength - Q: What is the ARP warranty on this head stud kit?
A: ARP provides a one-year unlimited mileage warranty against manufacturing defects
Shipping &. Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure ARP box 11 in x 9 in x 2.5 in
- Weight: 4.85 lbs product 5.3 lbs shipping
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