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SKU: 202-4206 | UPC: 672036007492
ARP Nissan L24/L26/L28 Series Head Stud Kit 1970-1983 240Z 260Z 280Z 280ZX
ARP 202-4206 head stud kit upgrades cylinder head fastening on Nissan L24, L26, L28 engines found in classic Z cars. Designed for high-performance applications, it provides consistent clamp load to seal head gaskets under extreme boost and RPM. Perfect for rebuilt engines in street-driven 240Z or track-focused 280ZX builds.
Key Features
- Genuine ARP 8740 Chromoly Construction: Heat-treated steel studs resist fatigue and maintain tension in high-heat, high-pressure environments
- Stud Design: Minimizes cylinder block thread damage compared to bolts, ensuring repeatable torque values over multiple services
- Precision-Rolled Threads: Maximizes thread engagement for even load distribution and prevents galling during installation
- Matched 12-Point Nuts and Hardened Washers: Included hardware simplifies assembly with secure, high-torque retention
- Application-Specific Lengths: 11.000 in studs tailored to L-series heads for exact fit without modifications
Product Notes
- MPN 202-4206 from ARP, category Engine Components Head Stud and Bolt Kits
- Torque to ARP specs using moly or Ultra-Torque lubricant for best results
- Ships in protective packaging, weight 2.1 lbs, box dimensions 12 x 8 x 2 inches
Installation Notes
- Professional installation recommended.
- Clean all threads thoroughly and apply ARP Ultra-Torque lubricant to studs and nuts
- Follow ARP torque sequence, initial 60 ft-lbs then final 75 ft-lbs, re-torque after 500 miles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1970-1973 | Nissan | 240Z | Base |
| 1974-1975 | Nissan | 260Z | 2+2 |
| 1974-1975 | Nissan | 260Z | Base |
| 1975-1978 | Nissan | 280Z | 2+2 |
| 1975-1978 | Nissan | 280Z | Base |
| 1979 | Nissan | 280ZX | 2+2 |
| 1979-1983 | Nissan | 280ZX | Base |
| 1980-1981 | Nissan | 280ZX | 2+2 |
| 1980-1981 | Nissan | 280ZX | GL |
| 1981 | Nissan | 280ZX | GL |
| 1982-1983 | Nissan | 280ZX | 2+2 |
| 1977-1980 | Nissan | 810 | Base |
| 1981 | Nissan | Maxima | SL |
Why Choose ARP?
- Proven in racing and OEM applications for decades of reliability
- Engineered with exact metallurgy and thread geometry for L-series engines
- Backed by detailed torque data and installation guides from the fastener experts
Frequently Asked Questions
-
Q: Does this kit fit turbocharged L28 engines in 280ZX?
A: Yes, ARP 202-4206 works with stock and turbo L28ET heads, providing clamp load for up to 25 psi boost levels -
Q: What material are the studs made from?
A: High-strength 8740 chromoly steel, heat-treated to ARP2000 specs for superior tensile strength over 200,000 psi -
Q: Is a torque wrench required for installation?
A: Yes, use a calibrated torque wrench and follow the 3-stage torque process outlined in the included instructions
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-packed box, 12 x 8 x 2 inches
- Weight: 2.1 lbs
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