ARP M8-1.25 Broached Single Stud

This ARP performance fastener, stud, bolt, tool, or assembly is the M8-1.25 Broached Single Stud. 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

• Material Strength: Forged 8740 chromoly steel offers 180,000 PSI tensile strength for repeated torque cycles.
• Length Design: 2.350 inch overall length matches factory stud height for direct replacement.
• 8740 chromoly steel heat treated to 180,000 PSI minimum tensile with 12-15% elongation.
• Thread Specs: M8 x 1.25 rolled threads provide secure engagement without galling during installation.
• Finish Protection: Black oxide coating prevents rust in engine bays exposed to moisture and oils.
• CNC machining ensures concentricity for even load distribution.

Fitment

Specifications

What’s Included

One new ARP hardware – single 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
• ARP 1/2 x 6.5in Long Broached Individual Stud
• ARP 1/2in -20 12pt Nut (Single Nut)
• ARP 1/2in x 5.250in Long Broached Allen Head Stud (Single Stud)

Frequently Asked Questions

How do I confirm the M8-1.25 Broached Single Stud 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 AF2.350-1B, 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.