Product Description
ARP 150-5801 MAIN STUD KIT – 2003–2007 FORD 6.0L POWERSTROKE
Fortify your 6.0L Powerstroke bottom end with the ARP 150-5801 Main Stud Kit. ARP’s 8740 chromoly main studs deliver consistent, repeatable clamping force to control main-cap walk and keep bearing bores true under boost, heat, and heavy towing. Each kit includes precision J-form threads, parallel-ground washers, and 12-point nuts, plus ARP Ultra-Torque fastener assembly lubricant for accurate preload and smooth installation.
Upgrading to studs improves torque accuracy versus bolts and reduces stress on block threads—ideal for performance builds, towing, and reliability-focused refreshes. Pair this kit with ARP head studs for a fully locked-down 6.0L: ARP 250-4202 Head Stud Kit or ARP 250-4205 Custom Age 625+ Head Stud Kit.
FAQ
DO THESE STUDS COME WITH NUTS, WASHERS, AND LUBE?
Yes—hardware and ARP Ultra-Torque fastener assembly lubricant are included for correct preload.
WHY USE MAIN STUDS INSTEAD OF BOLTS?
Studs increase torque accuracy, reduce block thread wear, improve cap alignment, and help prevent main-cap walk in high-load applications.
ARE MACHINE OPERATIONS REQUIRED?
As with any fastener upgrade, you should check main bearing bores after installation and align-hone the block if required.
WHAT TORQUE SHOULD I USE?
Follow the ARP instructions and torque sequence using the supplied ARP Ultra-Torque lubricant. (Always verify with the latest ARP instruction sheet for your application.)
Fitment
- 2003–2007 Ford 6.0L Powerstroke (F-250 / F-350 / F-450 / F-550, Excursion 2003–2005)
- Direct replacement upgrade for factory main cap fasteners
Cross-Reference & Related ARP Products (CPP Diesel)
- ARP 250-4202 Head Stud Kit – 6.0L
- ARP 250-4205 Custom Age 625+ Head Stud Kit – 6.0L
- ARP 250-6301 Rod Bolt Kit – 6.0L/6.4L
- ARP 150-2505 Balancer Bolt Kit – 6.0L/6.4L
- ARP 150-2902 Flexplate Bolt Kit – 6.0L/6.4L (Auto)
Specifications for ARP 150-5801
| UPC | 672036045845 |
|---|---|
| GTIN (14) | 00672036045845 |
| Shipping Info | Calculated at checkout; product page lists package dims approx. 8" (W) × 4" (H) × 10" (D). |
| Cross Reference | ARP 250-4202, ARP 250-4205, ARP 250-6301 |
| E-Codes / CARB EO | Not applicable (hardware/fasteners) |
| Prop 65 | Yes – Cancer & Reproductive Harm |
