SKU: 208-4701 | UPC: 672036033736
ARP Honda/Acura K20A (A2 & A3) Head Stud Kit 2002-2006 RSX & Civic Si
ARP 208-4701 head stud kit upgrades cylinder head fastening on K20A2 and K20A3 engines found in 2002-2006 Acura RSX models and 2002-2005 Honda Civic Si. These studs provide even clamp load under high boost or high RPM conditions to prevent head gasket failure. Built with ARP2000 alloy for 220,000 PSI tensile strength, this kit ensures engine integrity during street driving, drag racing, or track days.
Key Features
- ARP2000 Alloy Construction: High-strength material resists fatigue and maintains clamp load through repeated heat cycles
- Stud Design: Minimizes cylinder block thread damage compared to bolts and allows accurate torque values
- Precision-Rolled Threads: Increases thread engagement by 25% over cut threads for consistent torquing
- 12-Point Nuts: Included hardened-steel nuts with wide base for secure wrench hold and even load distribution
- Application-Specific Sizing: Exact fit for K20A2/A3 with M11x1.5 studs at 233mm length for mains and 192mm for outers
Product Notes
- Inspect head and block surfaces for flatness before installation
- Lubricate with ARP Ultra-Torque for accurate torque readings
- Kit weighs 2.2 lbs and ships in 10 x 7 x 2 inch box
Installation Notes
- Professional installation recommended.
- Torque mains to 65 ft-lbs plus 110 degree angle, outers to 27 ft-lbs using ARP sequence
- Compatible with OEM or aftermarket head gaskets and MLS designs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2006 | Acura | RSX | Base |
| 2002-2006 | Acura | RSX | Type-S |
| 2002-2005 | Honda | Civic Si | – |
Why Choose ARP?
- Over 70 years as the leader in performance fasteners used in NHRA and NASCAR
- Every stud tested for strength and uniformity before packaging
- Engineered in the USA with exact specs for Honda K-series reliability
Frequently Asked Questions
- Q: Does this kit fit both K20A2 and K20A3 engines?
A: Yes, ARP 208-4701 includes 8 main studs at 233mm and 2 outer studs at 192mm for precise fit on RSX Type-S (K20A2) and RSX Base (K20A3) - Q: What material are the studs made from?
A: ARP2000 chrome moly alloy with 220,000 PSI tensile strength and black oxide finish for corrosion resistance - Q: What is the warranty and torque procedure?
A: Lifetime warranty against failure. follow ARP torque specs with Ultra-Torque lube and recheck after 500 miles
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Secure ARP branded box measuring 10 x 7 x 2 inches
- Weight: 2.2 lbs
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