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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
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2004 | Ford | Focus | LX |
| 2003-2004 | Ford | Focus | SE |
| 2007 | Ford | Focus | ST |
| 2003-2004 | Ford | Focus | ZTS |
| 2003-2004 | Ford | Focus | ZTW |
| 2003-2004 | Ford | Focus | ZX3 |
| 2005-2006 | Ford | Focus | ZX4 ST |
| 2003-2004 | Ford | Focus | ZX5 |
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
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