ARP Main Stud Kit - Dodge Cummins 5.9L 12V 1989-1997

This ARP main stud kit replaces the factory main cap bolts on the 1989 to mid-1997 Dodge Cummins 5.9L 12-valve diesel with studs that clamp the main caps more consistently for high-boost and high-torque builds. The studs are made from ARP2000 material rated to 220,000 psi tensile strength, and the kit uses 14mm main studs with hardened, parallel-ground washers and nuts for accurate, repeatable torque.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy