Product Description
Lock down your 7.3L bottom end with the ARP 250-5801 Main Stud Kit, engineered for 1994–2003 Ford Power Stroke 7.3L builds that demand durability and repeatable clamping force. Manufactured from premium 8740 chromoly and heat-treated to deliver approximately 190,000 psi tensile strength, these studs provide superior main-cap retention under heavy towing, tuned street use, and competition. Correct socket sizes are included for hassle-free service: 14mm 12-point and 12mm 12-point nuts plus 5mm Allen for the main cap side plugs. Pair this kit with ARP head studs and rod bolts to create a rock-solid foundation for power and reliability.
Shopping ARP at CPP Diesel means expert support and fast fulfillment. Orders placed before 2:00 PM ET typically ship the same business day, and shipping is calculated at checkout. See our ARP brand collection for complementary fasteners and tools.
Fitment
- Ford Power Stroke 7.3L diesel — 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 (F-250, F-350, Excursion)
Cross-Reference & Helpful ARP Links (CPP Diesel)
- ARP 250-4201 Head Stud Kit — 1994–2003 7.3L
- ARP 250-6303 Rod Bolt Kit — 1994–2000 7.3L (for forged rods)
- ARP 250-6302 Rod Bolt Kit — 2001–2003 7.3L (for PM rods)
- ARP 900-1300 Piston Ring Compressor — 4.130" Bore
- Shop All ARP at CPP Diesel
FAQ
Q: Why upgrade to main studs on a 7.3L?
A: Studs provide more consistent and higher clamping force than factory bolts, preventing main-cap walk and bearing misalignment under load.
Q: Do these studs require line honing?
A: Anytime main fasteners are changed, checking main bore alignment is recommended. Many performance builds line-hone for ideal bearing geometry.
Q: What sockets do I need?
A: 14mm 12-point and 12mm 12-point for the nuts, plus a 5mm Allen for side plugs.
Q: Are ARP studs reusable?
A: In most cases they can be reused after proper inspection. Always follow ARP installation instructions and torque procedures with ARP Ultra-Torque.
| Manufacturer | ARP (Automotive Racing Products) |
| Part Number | 250-5801 |
| UPC | 672036033378 |
| GTIN | 672036033378 |
| Tensile Strength | ~190,000 psi |
| Socket Sizes | 14mm 12-point, 12mm 12-point, 5mm Allen |
| Fitment | 1994–2003 Ford 7.3L Power Stroke (F-250, F-350, Excursion) |
| Shipping Info | Calculated at checkout; orders placed before 2:00 PM ET typically ship same business day |
| Cross Reference (CPP Links) | ARP 250-4201 Head Stud Kit; ARP 250-6303 Rod Bolts (1994–2000); ARP 250-6302 Rod Bolts (2001–2003) |
| E-codes | N/A (engine fastener kit) |
| Prop 65 | WARNING: Cancer and Reproductive Harm — P65Warnings.ca.gov |
