ARP Toyota Supra B58 CA625+ Head Stud Kit

This ARP performance fastener, stud, bolt, tool, or assembly is the Toyota Supra B58 CA625+ Head Stud Kit. 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

• ARP625+ Alloy: Forged material with 260000 psi tensile strength resists stretching and fatigue in high-boost setups.
• Pro Series Design: Includes 11 main studs M12x1.5x242mm 9 auxiliary studs M11x1.5x195mm 12-point nuts and hardened parallel washers for complete assembly.
• Precision Threads: Rolled threads ensure accurate torque and repeatable clamping load on aluminum heads.
• Hard Chrome Finish: Provides corrosion resistance and reduces galling during installation and repeated removal.
• USA Made: Manufactured to ARP exacting standards for consistent quality in every kit.
• ARP625+ custom age 625 alloy with 260000 psi tensile strength and 74 Rockwell C surface hardness for extreme duty.

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.

Related Parts

• Shop all ARP products
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• ARP 02-06 Mini Cooper S Head Stud Kit

Frequently Asked Questions

How do I confirm the Toyota Supra B58 CA625+ 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 203-4706, 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.