SKU: 209-4301 | UPC: 672036008215
ARP Cylinder Head Stud Kit for 1990-1997 Opel/Vauxhall 2.0L 16V
ARP Pro Series cylinder head stud kit 209-4301 delivers precise clamping for Opel and Vauxhall 2.0L 16V engines found in Calibra, Vectra, Cavalier and Astra models. These studs use 8740 chrome moly alloy heat-treated to 190,000 PSI for dependable head gasket sealing under high boost or RPM. Professional engine builders choose ARP for consistent performance in racing and street applications.
Key Features
- 8740 Chrome Moly Material: Heat-treated to 190,000 PSI tensile strength, exceeding aircraft alloy ratings for extreme durability in high-compression builds.
- Post-Heat-Treat Thread Rolling: Provides 2000% greater fatigue strength compared to pre-heat-treat threading, resisting cracks under repeated stress.
- Centerless Grinding: Ensures perfect concentricity so cylinder heads and gaskets align effortlessly without binding or misalignment.
- Undercut Stud Design: Equalizes stretch across all studs for uniform clamping force that accounts for head gasket compression and prevents leaks.
- Black Oxide Finish: Resists corrosion while maintaining precise thread engagement for repeatable torque values.
Product Notes
- Studs marked with ARP for authenticity and quality verification.
- Designed for X20XEV and C20XE 2.0L 16V DOHC engines.
- Ships in protective packaging to prevent thread damage.
Installation Notes
- Professional installation recommended.
- Use ARP Ultra-Torque assembly lubricant on threads and under nut faces for accurate torque.
- Torque in sequence to ARP specifications: 60 ft-lbs initial, then 75 ft-lbs final using calibrated torque wrench.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1997 | Vauxhall | Calibra | 2.0 16V (C20XE) |
| 1991-1997 | Opel | Calibra | 2.0 16V (C20XE) |
| 1992-1995 | Opel | Vectra | 2.0 16V (X20XEV) |
| 1993-1995 | Vauxhall | Cavalier | 2.0 16V (X20XEV) |
| 1993-1998 | Opel | Astra | 2.0 16V (X20XEV) |
| 1993-1997 | Vauxhall | Vectra | 2.0 16V (X20XEV) |
Why Choose ARP?
- Relied on by professional engine builders in all racing categories.
- Manufactured in USA with exacting tolerances for repeatable results.
- Proven design prevents head gasket failures in high-performance engines.
Frequently Asked Questions
-
Q: Will this kit fit my 1994 Vauxhall Calibra 2.0 16V?
A: Yes, it fits 1990-1997 Calibra 2.0L 16V models with C20XE engine exactly, replacing stock bolts for better clamping. -
Q: What is the material and strength rating?
A: Premium 8740 chrome moly alloy heat-treated to 190,000 PSI tensile strength with black oxide finish for corrosion resistance. -
Q: What is the warranty and installation process?
A: ARP offers a limited defect warranty. install with ARP lube, torque in 3 stages per instructions included with kit.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic tray in 9 x 6 x 1 inch box
- Weight: 1.1 lbs
ARP
ARP (Automotive Racing Products) is the world’s premier manufacturer of high-strength engine and driveline fasteners—head studs and bolts, main studs, rod bolts, and more—engineered and manufactured in-house from start to finish for race-proven reliability. With vertically integrated processes that include cold heading, machining, heat-treating, thread rolling after heat treat, and rigorous QA, ARP maintains aerospace-level certifications (ISO 9001 and AS9100) and validates every part for repeatable clamp load and fatigue resistance. Signature alloys such as 8740 chromoly, ARP2000, L19, and Custom Age 625+ deliver ultimate tensile strengths up to the super-alloy range, while ARP Ultra-Torque fastener assembly lubricant helps achieve consistent pre-load during installation. From street performance builds to professional motorsport programs, ARP fasteners provide precise fitment, superior metallurgy, and the durability needed to keep engines together at elevated cylinder pressures and...
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