ARP Ford 03 Duratec 2.3L Head Stud Kit

SKU: 151-4204 | UPC: 672036029074

ARP 2003-2007 Ford Focus Duratec 2.3L Head Stud Kit

ARP 151-4204 Head Stud Kit targets Ford 2.3L Duratec engines in 2003-2007 Focus models including ZX3, ZX5, and ST variants. This kit secures the cylinder head with dependable clamp load to handle boosted power and high-rpm demands without distortion. Built for racers and daily drivers seeking repeatable torque and engine integrity.

Key Features

• 8740 Chromoly Steel: Heat-treated to 200,000 psi tensile strength resists fatigue in high-stress environments
• Stud Design: Minimizes block thread damage and ensures accurate torque retention over multiple heat cycles
• Rolled Threads: Increases engagement depth by 25-30 percent for consistent fastening under load
• Matched Hardware: Includes washers and instructions for bolt-on simplicity and correct sequencing
• Multi-Use Durability: Handles street commuting, drag strip abuse, or track days without compromise

Product Notes

• Confirm 2.3L Duratec engine code before ordering for exact match
• Lubricate with ARP Ultra-Torque for precise torque values and gasket sealing
• Securely boxed for protection during transit with foam inserts

Installation Notes

• Professional installation recommended.
• Chase cylinder head and block threads with ARP tap kit prior to assembly
• Compatible with factory head gaskets and MLS upgrades. torque in ARP-specified sequence

This Part Fits

Why Choose ARP?

• Decades of dominance in motorsports with fasteners trusted by championship teams
• Extensive material testing ensures strength beyond OEM limits
• Precision machining and thread rolling for flawless fit and load distribution

Frequently Asked Questions

• Q: Does this kit fit 2004 Ford Focus ZX3 with 2.3L Duratec?
  A: Yes, ARP 151-4204 directly replaces OEM bolts on 2003-2004 ZX3, ZX5, and compatible 2.3L Duratec models for secure head retention.
• Q: What material and strength rating do these studs have?
  A: Constructed from 8740 chromoly steel, induction hardened and stress-relieved to ARP’s 200,000 psi rating for superior holding power.
• Q: What warranty coverage is provided?
  A: ARP stands behind the kit with a limited lifetime warranty when installed per instructions and registered on their site.

Shipping & Handling

• Method: UPS Ground
• Availability: In stock – ships same or next business day
• Packaging: ARP-branded box 8 x 6 x 1 inches
• Weight: 2.1 lbs