Click to zoom in
This ARP performance fastener, stud, bolt, tool, or assembly is the Ford Modular 4.6L 2&4 Valve 12 pt Head Stud Kit for 1996-2007 Ford Mustang. Confirm the exact engine or vehicle application, thread size, length, material, strength series, included quantity, installation lubricant, tightening sequence, and current ARP torque specification before ordering.
Key Features
- ARP2000 Alloy Studs: Forged from high-tensile ARP2000 material with 220,000 psi tensile strength to resist stretch and fatigue.
- Complete Kit: Includes 20 studs M11 x 1.5 thread 7.900 in length 10 nuts 20 washers for both cylinder heads.
- 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.
- Studs forged from ARP2000 alloy with 220,000 psi tensile strength and 174,000 psi yield strength.
- Black Oxide Finish: Provides corrosion resistance and reduces friction during assembly.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1996-2007 | Ford | Mustang | GT |
| 2001 | Ford | Mustang | GT Bullitt |
| 1996-1999 | Ford | Mustang | SVT Cobra |
| 2001 | Ford | Mustang | SVT Cobra |
| 2003-2004 | Ford | Mustang | SVT Cobra |
| 2003 | Ford | Mustang | SVT Cobra 10th Anniversary |
| 2007 | Ford | Mustang | Shelby GT |
| 2007-2011 | Ford | Mustang | Shelby GT500 |
| 2008-2009 | Ford | Mustang | Shelby GT500KR |
Specifications
| Brand | ARP |
|---|---|
| Manufacturer Part Number | 256-4201 |
| Product Type | Head Stud & Bolt Kits |
| Condition | New |
| Configuration | Ford Modular 4.6L 2&4 Valve 12 pt Head Stud Kit |
| 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 |
| 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 |
| 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 |
| Key Features ARP2000 Alloy Studs | Forged from high-tensile ARP2000 material with 220,000 psi tensile strength to resist stretch and fatigue 12-Point |
What's Included
One new ARP head stud & bolt kit in the exact configuration and quantity identified by this listing. Brackets, wiring, air lines, fittings, switches, fasteners, fitting kits, fluids, covers, and accessories are included only when expressly stated for this exact part.
About ARP
Automotive Racing Products manufactures high-performance studs, bolts, nuts, washers, wheel hardware, assembly tools, and installation lubricants for engine, drivetrain, chassis, and racing applications. Thread dimensions, material, preload method, lubricant, torque, and included quantity remain exact-part specific.
Important Disclosures
- California Proposition 65 warning applies. Review the current manufacturer warning before handling or installation.
Related Parts
- Shop all ARP products
- ARP 13 Ford Coyote 5.0L V8 Head Stud Kit
- ARP Ford Coyote 5.0L Head Stud Kit
- ARP Ford Modular 4.6L/5.4L 2V/4V ARP2000 Hex Head Stud Kit
Frequently Asked Questions
How do I confirm the Ford Modular 4.6L 2&4 Valve 12 pt Head Stud Kit fits my application?
Match the exact engine family or vehicle, component location, thread diameter and pitch, under-head length, material, strength series, and every current ARP application note.
Can I reuse the factory torque value with this ARP hardware?
Not automatically. Use ARP's current instructions for the exact part, material, lubricant, tightening sequence, and preload method. Factory torque values may be based on different hardware and friction.
What is included with this ARP kit?
Only the studs, bolts, nuts, washers, lubricant, and tools expressly listed for this exact part number are included. Verify the required quantity before disassembly.
Installation Instructions
- Confirm ARP part number 256-4201, the complete application, and every required supporting component before beginning work.
- Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
- Follow ARP's current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
- Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.
ARP Head Studs
Shop ARP head studs, main studs, rod bolts, flywheel and flexplate bolts, pressure-plate hardware, wheel studs, engine fasteners, assembly tools, and Ultra-Torque lubricant by exact manufacturer part number. Match every engine, vehicle, thread, length, material, strength series, quantity, lubricant, and preload requirement before ordering. Head Studs and Main Studs Head and main stud kits are specific to the engine family, block, cylinder head, main-cap arrangement, material, and required clamping load. Confirm the exact engine generation and ARP series, then follow the current lubricant, tightening sequence, torque, or stretch instructions supplied for that kit. Rod, Flywheel, Flexplate, and Pressure-Plate Hardware Critical rotating-assembly fasteners must match thread diameter and pitch, under-head or overall length, shank, head style, material, quantity, and mating component. Similar-looking fasteners are not interchangeable, and factory torque values may not apply to ARP hardwar...
View ARP Head Studs Products
Head Components
Cylinder head components and engine internals for performance builds and OE service are stocked at Black Ops Auto Works. Shop complete cylinder heads, head gaskets, head stud and bolt kits, rocker arms, lifters, camshaft and lifter kits, rotating assemblies, and main stud and bolt kits for LS, LT, HEMI 5.7/6.1/6.4, Coyote, Cummins, Powerstroke, VW/Audi turbo, Subaru, Nissan, and import platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 972 Head Components SKUs across component type, engine platform, and bore or gasket specification. What This Collection Covers Head Components groups together the parts that live at and around the cylinder head, the area of the engine most affected by heat, combustion pressure, and clamping load. This includes complete heads, head gaskets, head studs and bolts, rocker arms, lifters, camshaft and lifter kits, main stud and bolt kits, and ro...
View Head Components Products
Head Stud & Bolt Kits
Head Stud and Bolt Kits for LS, Gen III Hemi, Coyote and Ford Modular, Toyota 2JZ, Nissan RB26, Subaru EJ, Honda K-series, Mitsubishi 4G63, VW 1.8T, and Power Stroke applications are stocked at Black Ops Auto Works. Shop ARP head studs, head bolts, L19 studs, Custom Age 625+ studs, Pro Series hardware, cylinder head fasteners, MLS gasket support, and boosted engine hardware for proven street, drag, road course, and high horsepower engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 199 head stud and bolt SKUs across the fitments and build levels enthusiasts actually use. What Head Stud and Bolt Kits Cover This collection includes cylinder head stud kits, head bolt kits, nuts, washers, and high-strength fastening solutions for stock rebuilds, boosted street engines, race engines, and diesel performance applications. The correct fastener supports reliable head gasket cl...
View Head Stud & Bolt Kits Products