ARP 99+ Subaru EJ Series Phase 2 SOHC Head Stud Kit

This ARP performance fastener, stud, bolt, tool, or assembly is the 99+ Subaru EJ Series Phase 2 SOHC Head Stud Kit for 2003 Subaru Baja. 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 Construction: Studs forged from proprietary ARP2000 material rated at 220,000 psi tensile strength for consistent clamping under extreme loads.
• Complete Kit Contents: Includes 10 head studs 2.400-inch shank length M11x1.5 thread plus chrome moly washers and 12-point nuts for precise torquing.
• Forged ARP2000 chrome moly alloy with 220,000 psi tensile strength far exceeding OEM bolts.
• Rolled Threads: Increases fatigue strength by 4 times over cut threads ensuring long-term durability in high-vibration environments.
• Corrosion-Resistant Finish: Black oxide coating protects against rust in harsh conditions.
• Every kit tested for load and fatigue in real-world high-horsepower applications.

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 Subaru EJ Series DOHC Custom Age Head Stud Kit
• ARP Subaru EJ Series Press Fit Rod Bolt Kit
• ARP Subaru WRX EJ20 & EJ25 Head Stud Kit

Frequently Asked Questions

How do I confirm the 99+ Subaru EJ Series Phase 2 SOHC 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 260-4702, 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.