SKU: 234-4314 | UPC: 672036040802
ARP 2004+ GM Cathedral Port 625+ 12pt Head Stud Kit
ARP 234-4314 head stud kit uses 625+ Inconel alloy for extreme cylinder pressures in LS cathedral port engines. Fits 2004-2007 Cadillac CTS-V and 2004-2006 Pontiac GTO plus compatible GM LS1 LS2 LS6 applications. Provides consistent torque retention and block protection under high boost or nitrous.
Key Features
- Genuine ARP Fasteners: 625+ Inconel construction handles 220,000 psi tensile strength for boosted and high-rpm reliability
- Stud Design: Reduces cylinder block thread damage versus bolts while ensuring even gasket compression
- 12-Point Nuts: Precision rolled threads offer better wrench grip and repeatable torque values
- Matched Hardware: Includes hard washers and lubricant instructions for complete easy assembly
- Versatile Use: Built for street daily drivers track days and drag strip punishment
Product Notes
- Inspect head and block threads before install for optimal performance
- Torque to ARP specs after 100 miles and recheck after heat cycles
- Securely boxed for protection during transit
Installation Notes
- Professional installation recommended.
- Clean all threads and apply ARP Ultra-Torque lubricant as specified
- Follow ARP torque sequence diagram M11 x 1.5 studs at 65-75 ft-lbs dry
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2007 | Cadillac | CTS | V |
| 2004-2006 | Pontiac | GTO | Base |
| 1998-2002 | Chevrolet | Camaro | SS |
| 1998-2002 | Pontiac | Firebird | Trans Am |
| 1999-2007 | Chevrolet | Silverado 1500 | 5.3L |
Why Choose ARP?
- Decades of racing wins from NHRA to endurance series
- Proprietary heat treatment exceeds SAE standards
- Every kit tested for fatigue and pull-out strength
Frequently Asked Questions
- Q: Does this fit 2006 Pontiac GTO LS2 engine?
A: Yes ARP 234-4314 fits all 2004-2006 GTO LS1 and LS2 cathedral port heads perfectly - Q: What material are the studs made from?
A: ARP 625+ Inconel alloy rated for extreme boost over 50 psi and high cylinder pressures - Q: Is there a warranty on this kit?
A: ARP offers limited lifetime warranty against manufacturing defects when installed per instructions
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: ARP branded box 12 x 10 x 2.5 inches
- Weight: 4.65 lbs
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