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SKU: 208-5801 | UPC: 672036048815
ARP 90-05 Acura NSX 3.0L/3.2L Main Stud Kit
This ARP main stud kit replaces factory main bolts on 1990-2005 Acura NSX models with 3.0L C30A or 3.2L C32B engines. It delivers consistent clamp load to secure crankshaft main caps under extreme stress from high-rpm operation or forced induction. Engine builders choose it for dependable bottom-end strength in track and street applications.
Key Features
- ARP2000 Alloy Construction: Forged from high-strength material with 220,000 psi tensile strength to handle cylinder pressures beyond stock limits
- Stud Design: Allows precise main cap alignment and even torque distribution for reduced distortion and bearing stability
- Complete Kit Contents: Includes ten main studs, hardened parallel washers and twelve-point nuts for one-time installation
- Hex Socket Heads: Enable accurate torquing without damaging threads during assembly or disassembly
- Reusable Components: With proper torque and ARP Ultra-Torque lubricant, studs support multiple engine builds
Product Notes
- Apply ARP Ultra-Torque assembly lubricant to threads and under nut faces for correct preload
- Verify engine block main bore condition before installation to ensure proper stud fit
- Special order item, confirm stock before ordering
Installation Notes
- Professional installation recommended.
- Torque studs in sequence to ARP specifications, typically 85-95 ft-lbs depending on fastener size
- Compatible with OEM main caps, no machining required for direct replacement
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1995 | Acura | NSX | All |
| 1997-2005 | Acura | NSX | All |
Why Choose ARP?
- Decades of motorsport use in drag racing, road racing and endurance events
- CNC-rolled threads for maximum fatigue resistance and load capacity
- Engineered and made in the USA with rigorous quality testing
Frequently Asked Questions
-
Q: Does this kit fit all 1990-2005 Acura NSX engines?
A: Yes, designed for 3.0L C30A and 3.2L C32B engines in all NSX models from those years -
Q: What material are the studs made from?
A: ARP2000 proprietary alloy with minimum 220,000 psi tensile strength and 135,000 psi yield strength -
Q: What is the warranty on this kit?
A: ARP provides a lifetime warranty against fastener failure when installed and torqued per instructions
Shipping & Handling
- Method: Standard ground shipping
- Availability: In stock - ships same or next business day
- Packaging: Secure ARP box measuring 12 x 4 x 1 inches
- Weight: 1.5 lbs
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