ARP M12 x 1.75 x 40 12pt Black Oxide Bolts (5/pkg)

This ARP performance fastener, stud, bolt, tool, or assembly is the M12 x 1.75 x 40 12pt Black Oxide Bolts (5/pkg). 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

• 8740 Chrome Moly Steel: Forged construction with 200000 PSI tensile strength handles extreme stress.
• 40mm Length: Matches OEM and ARP kit specs for mains pulley and accessory bolts.
• 12-Point Head: Distributes torque evenly to prevent stripping during high-load assembly.
• Forged from 8740 chrome moly steel with 200000 PSI tensile strength and 170000 PSI yield for demanding builds.
• Black Oxide Finish: Resists corrosion and galling for long-term durability in engine environments.
• Designed for Toyota 2JZ Nissan RB26 Mitsubishi 4G63 and other performance engines requiring M12 x 1.75 x 40mm hardware in mains accessories or kits.

Fitment

Specifications

What’s Included

One new ARP hardware kits – other 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 .875in OD x 7/16in ID Insert Washers (10 pack)
• ARP 01-06 6.6L GM Duramax Diesel Flywheel Bolt Kit
• ARP 01-10 6.6L GM Duramax Diesel Flexplate Bolt Kit

Frequently Asked Questions

How do I confirm the M12 x 1.75 x 40 12pt Black Oxide Bolts (5/pkg) 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 675-1004, 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.