ARP Rover 3.9L-4.6L V8 with 10 Bolt Heads – Head Stud Kit

This ARP performance fastener, stud, bolt, tool, or assembly is the Rover 3.9L-4.6L V8 with 10 Bolt Heads – Head Stud Kit for 1993 Land Rover Defender 110. 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

• ARP Fasteners: Constructed from high-strength 8740 chromoly steel with 180,000-200,000 psi tensile strength for secure head retention.
• Precision Threads: Rolled before heat treatment for maximum fatigue strength and consistent engagement in aluminum heads.
• Matched Hardware: Includes washers and twelve-point nuts for complete kit and simplified bolt-on assembly.
• Made from ARP 8740 chromoly steel with minimum 180,000 psi tensile strength and rolled threads for fatigue resistance.
• Stud Design: Parallel threads reduce distortion and wear on block threads while enabling accurate repeatable torque values.
• Extensive testing ensures performance from 200hp daily drivers to 1000hp race motors.

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 BMW 4.4L M62/M62TU Rod Bolt Kit
• ARP 01-10 6.6L GM Duramax Diesel Head Stud Kit
• ARP 02-06 Mini Cooper Head Bolt Kit

Frequently Asked Questions

How do I confirm the Rover 3.9L-4.6L V8 with 10 Bolt Heads – 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

1. Confirm ARP part number 157-4301, 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.