ARP Toyota Supra B58B30 Main Stud Kit

This ARP performance fastener, stud, bolt, tool, or assembly is the Toyota Supra B58B30 Main 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

• ARP2000 Alloy Steel: Rated at 220,000 PSI tensile strength over 50% stronger than OEM bolts to resist stretch and failure under extreme cylinder pressures.
• Complete Kit Contents: Includes 7 main studs (for inline-6 main bearings) Grade 25 CrMo 12-point nuts and hardened parallel ground washers.
• Precision Fit: CNC-machined to exact OEM dimensions for drop-in installation on B58B30 blocks without machining.
• Forged ARP2000 alloy steel with a minimum 220,000 PSI tensile strength and 135,000 PSI yield strength far exceeding aluminum block requirements.
• Rolled Threads: Produced after heat treatment for maximum fatigue resistance and consistent torque loading during high-boost operation.
• Black Oxide Finish: Resists corrosion galling and seizing in harsh engine environments for long-term durability.

Fitment

Specifications

What’s Included

One new ARP main 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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Frequently Asked Questions

How do I confirm the Toyota Supra B58B30 Main 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 203-5409, 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.