ARP Custom Age625+ General Replacement

This ARP performance fastener, stud, bolt, tool, or assembly is the Custom Age625+ General Replacement. 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

• Precision-Rolled Threads: 3/8-24 thread size with 7.800 inch length ensures full engagement and accurate repeatable torque.
• Custom Age625+ Alloy: Nickel-based material with 260,000 psi tensile strength resists fatigue in high-rpm and boosted applications.
• Matched Hardware: Complete kit includes bolts for 8 rods plus washers for direct stock rod replacement.
• 12-Point Head Design:.345 inch guard rails allow secure wrench grip for high torque without stripping.
• Proprietary alloys outperform steel in strength and corrosion resistance.
• Custom Age625+ superalloy combines nickel chromium and molybdenum for 260,000 psi tensile strength and heat resistance up to 1000F.

Fitment

Specifications

What’s Included

One new ARP rod 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 02-06 Mini Cooper S Rod Bolt Kit
• ARP 03-06 Evo 8/9 4G63 8mm Rod Bolt Kit
• ARP 3/8 inch x 1.6 ARP2000 Rod Bolt Kit

Frequently Asked Questions

How do I confirm the Custom Age625+ General Replacement 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 300-6704, 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.