This ARP performance fastener, stud, bolt, tool, or assembly is the Cylinder Head Stud Kit for Ford 4.6L & 5.4L 2V/4V. 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

• Heat Treatment: Vertically racked and treated to 190,000 PSI tensile strength for uniform hardness.
• Material: 8740 Chrome Moly alloy provides high strength for extreme engine loads.
• Includes studs 12-point nuts and hardened washers for complete assembly.
• Yes ARP 156-4301 fits all 1996-2004 Ford Mustang 4.6L 2V and 4V variants including GT Cobra and Mach 1.
• 8740 Chrome Moly heat-treated to 190,000 PSI some kits offer ARP2000 at 220,000 PSI.
• Yes full Pro Series kit includes head studs 12-point nuts and hardened parallel ground washers.

Fitment

Specifications

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 01-10 6.6L GM Duramax Diesel Head Stud Kit
• ARP 02-06 Mini Cooper Head Bolt Kit
• ARP 02-06 Mini Cooper S Head Stud Kit

Frequently Asked Questions

How do I confirm the Cylinder Head Stud Kit for Ford 4.6L & 5.4L 2V/4V 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

1. Confirm ARP part number 156-4301, the complete application, and every required supporting component before beginning work.
2. Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
3. Follow ARP’s current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
4. Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.

This ARP performance fastener, stud, bolt, tool, or assembly is the Cylinder Head Stud Kit for Ford 4.6L & 5.4L 2V/4V. 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

• 8740 Chrome Moly Material: Heat-treated to 190000 PSI tensile strength for durability under extreme cylinder pressures.
• Post-Heat-Treat Thread Rolling: Provides 2000% higher fatigue resistance compared to pre-heat-treat threading.
• Black Oxide Finish USA Made: Resists corrosion protects threads and stamped ARP for authenticity.
• Yes ARP 156-4101 fits all Ford Modular 4.6L 2V/4V and 5.4L Romeo blocks in Mustang GT Cobra F-150 and similar 1996-2008 models.
• Constructed from 8740 chrome moly alloy heat-treated to 190000 PSI with black oxide finish for corrosion resistance.

Fitment

Specifications

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 01-10 6.6L GM Duramax Diesel Head Stud Kit
• ARP 02-06 Mini Cooper Head Bolt Kit
• ARP 02-06 Mini Cooper S Head Stud Kit

Frequently Asked Questions

How do I confirm the Cylinder Head Stud Kit for Ford 4.6L & 5.4L 2V/4V 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

1. Confirm ARP part number 156-4101, the complete application, and every required supporting component before beginning work.
2. Clean and inspect all mating threads and components, then verify thread engagement, length, washers, nuts, lubricant, and required preparation before assembly.
3. Follow ARP’s current tightening sequence, lubricant instructions, torque or stretch method, and any retorque procedure for this exact part.
4. Verify clearance, preload, fastener seating, and normal component operation before returning the vehicle or engine to service.