Product Description

ARP 250-4205 HEAD STUD KIT – 625+ SERIES FOR 2003–2007 FORD 6.0L POWERSTROKE

Arm your 6.0L Powerstroke for boost, towing, and hard use with the ARP 250-4205 Custom Age 625+ Head Stud Kit. Engineered for extreme cylinder pressures, this kit delivers exceptional clamping force, superior fatigue strength, and repeatable torque for reliable head gasket sealing on 2003–2007 Ford Super Duty and Excursion 6.0L applications. Each kit includes premium studs, 12-point nuts, parallel-ground washers, and ARP hardware for a precise, professional install.

• Built from ARP’s proprietary Custom Age 625+ material for outstanding tensile and fatigue strength.
• Maximum clamping force helps prevent head lift and head gasket failure under boost.
• 12-point hardware and parallel-ground washers for accurate, repeatable torque.
• Direct fit for 2003–2007 Ford 6.0L Powerstroke (F-250/F-350/Super Duty & Excursion).

Fitment

• Ford Powerstroke 6.0L Diesel: 2003, 2004, 2005, 2006, 2007
• Vehicles: F-250, F-350 Super Duty, Excursion (6.0L)

FAQ

Q: Why choose Custom Age 625+ instead of standard ARP2000 studs?
A: 625+ offers a higher tensile/fatigue strength margin for tuned/boosted 6.0L builds, improving head gasket reliability.

Q: Do I need the inner row bolts on a 6.0L?
A: Yes—the inner row uses bolts. Many builders add ARP 250-4206 Inner Row Head Bolts for a complete fastener solution.

Q: What if I’m under stock-to-mild power?
A: Consider the ARP2000 kit ARP 250-4202 as a cost-effective alternative.

Q: What torque values should I use?
A: Always follow the latest ARP instructions supplied with the kit and use ARP Ultra-Torque assembly lube.

Cross Reference & Related ARP Products

• Standard ARP2000 Studs for 6.0L: ARP 250-4202
• Main Stud Kit (6.0L): ARP 150-5801
• Balancer Bolt Kit (6.0L/6.4L): ARP 150-2505
• Inner Row Head Bolts (6.0L): ARP 250-4206
• Shop All ARP at CPP: ARP Brand Page

Specifications for ARP 250-4205