SKU: 204-5409 | UPC: 672036650414
ARP Audi 5-Cylinder 1996 & Earlier Main Stud Kit
ARP main stud kit 204-5409 upgrades factory main bolts on 1980-1996 Audi 5-cylinder 2.0L, 2.2L, 2.3L engines found in 4000, 5000, 100, and 200 models. These studs deliver consistent clamping load to hold main bearing caps firmly during high-rpm operation and boosted power levels. Ideal for engine rebuilds or tuning projects requiring reliable bottom-end strength.
Key Features
- 8740 Chromoly Steel Construction: Heat treated to 200,000 psi tensile strength for extreme durability under high cylinder pressures.
- Rolled Threads: Boost fatigue strength by over 30 percent compared to cut threads, resisting stress cracks in performance applications.
- Complete Kit Contents: Includes 10 main studs, hardened parallel ground washers, and 12-point nuts for precise torque application.
- Black Oxide Finish: Provides corrosion resistance and reduces galling during installation and long-term engine use.
- Exact OEM Replacement Sizing: Matches Audi 5-cylinder main journal dimensions for drop-in fit without machining.
Product Notes
- Inspect engine block main bore threads for damage before installation.
- Apply ARP Ultra-Torque lubricant to threads and under nut faces for accurate torque values.
- Kit ships in ARP branded box, dimensions 8 x 6 x 2 inches.
Installation Notes
- Professional installation recommended.
- Torque studs in sequence to ARP spec: 75 ft-lbs with moly lube or 65 ft-lbs with Ultra-Torque.
- Compatible with stock main caps. no hardware modifications needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-1987 | Audi | 4000 | All |
| 1980-1988 | Audi | 5000 | All |
| 1988 | Audi | 5000 Quattro | All |
| 1989-1991 | Audi | 100 | All |
| 1989-1991 | Audi | 100 Quattro | All |
| 1989-1991 | Audi | 200 | All |
| 1989-1991 | Audi | 200 Quattro | All |
Why Choose ARP?
- Trusted by NHRA and IMSA racing teams for decades.
- Made in USA with aerospace-grade materials and processes.
- Precision CNC machining ensures perfect fit and repeatable torque.
Frequently Asked Questions
- Q: Will this kit fit Audi 5-cylinder engines after 1991?
A: Designed for 1980-1996 5-cylinder models up to 2.3L. confirm your engine code (ABK, AAZ, etc.) as later V6 models do not match. - Q: What material are the studs made from?
A: Forged 8740 chromoly steel, heat treated to 200,000 psi tensile and 160,000 psi yield strength for maximum clamping reliability. - Q: What is the warranty and installation process?
A: ARP offers a limited warranty against manufacturing defects. install with ARP lube, torque in 3 stages, and recheck after heat cycles.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard box, 8 x 6 x 2 inches
- Weight: 2 lbs shipping weight
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