ARP Ford Modular 4.6L/5.4L 2V/4V ARP2000 Hex Head Stud Kit

SKU: 256-4001 | UPC: 672036024284

ARP 1996-2004 Ford Mustang Modular 4.6L/5.4L 2V/4V ARP2000 Hex Head Stud Kit

ARP 256-4001 head stud kit fits Ford Modular 4.6L and 5.4L 2V/4V engines in 1996-2004 Mustang GT Bullitt SVT Cobra models. Forged ARP2000 studs provide high tensile strength and precise torque retention under boost or high rpm. Ideal for rebuilds rebuilds seeking dependable head sealing in street and race setups.

Key Features

• ARP2000 Alloy: 220000 psi tensile strength handles extreme cylinder pressures and resists fatigue in boosted naturally aspirated applications
• Stud Design: Minimizes block thread wear versus bolts while allowing accurate preload and easier head removal
• Rolled Threads: Increases thread strength by 35 percent over cut threads for better engagement and repeatable torquing
• Matched Hardware: Includes chrome moly 12-point nuts and hardened parallel washers for complete secure assembly
• Hex Head Style: Simplifies installation with standard tools and supports high torque values without stripping

Product Notes

• Inspect block threads for damage before install to achieve full clamping force
• Apply ARP Ultra-Torque lubricant to studs nuts washers for accurate torque readings
• Ships in protective cardboard box to prevent damage during transit

Installation Notes

• Professional installation recommended.
• Torque to ARP specs: 65-75 ft-lbs for 2V 85-110 ft-lbs for 4V using provided sequence diagram
• Works with OEM aftermarket aluminum iron cylinder heads gaskets

This Part Fits

Why Choose ARP?

• ARP fasteners power NHRA NASCAR winning engines for decades
• Every stud forged rolled tested to exacting standards
• Application-specific engineering matches Ford Modular block head designs

Frequently Asked Questions

• Q: Does this fit 2003-2004 Mustang SVT Cobra 4.6L 4V?
  A: Yes ARP 256-4001 Pro Series kit is direct fit for all 4.6L 4V Modular engines including 2003-2004 Terminator Cobras with stock ported heads
• Q: What makes ARP2000 different from stock bolts?
  A: ARP2000 alloy offers 220000 psi tensile 180000 psi yield strength versus OEM 150000 psi providing greater resistance to stretch failure under high boost rpm
• Q: What warranty does ARP provide?
  A: Limited one-year warranty from purchase date covers defects in materials workmanship excludes abuse improper installation

Shipping & Handling

• Method: UPS Ground / FedEx Ground
• Availability: In stock – ships same or next business day
• Packaging: Original ARP box 12 x 8 x 2 inches
• Weight: 5.1 lbs