ARP Custom Age 625+ Head Stud Kit
Not sure which option fits your application? Contact Us — we're happy to help.
ARP Custom Age 625+ Head Stud Kit - Nissan RB26DETT - Skyline GT-R (R32 / R33 / R34)
This ARP head stud kit suits the RB26DETT engine in the Nissan Skyline GT-R R32 / R33 / R34. It swaps the factory head bolts for studs, nuts and washers. The studs are wound into the block by hand and the head is clamped by torquing the nuts, which gives more even, repeatable clamping than factory stretch bolts and saves wear on the block threads each time the head comes off.
More clamping load helps the head gasket seal against high cylinder pressure, which is why head studs are one of the first parts fitted to a boosted or high-compression build.
Material: Custom Age 625+ super-alloy rated at 260,000–280,000 psi tensile strength.
See the Vehicle Fitment tab for the full list of vehicles.
Note: Installation by a professional is recommended.
Features
- Made in the USA by ARP
- Custom Age 625+ super-alloy, 260,000–280,000 psi
- Thread / diameter: M12 x 1.5
- ARP torque spec: 140 ft-lb (190 Nm) in three steps with ARP Ultra-Torque
- Installation instructions available from ARP (see Technical Specifications)
Shop more: ARP
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Nissan | Skyline GT-R | R32 | 1989–1994 | RB26DETT |
| Nissan | Skyline GT-R | R33 | 1995–1998 | RB26DETT |
| Nissan | Skyline GT-R | R34 | 1999–2002 | RB26DETT |
Technical Specifications
| Spec | Value |
|---|---|
| Brand | ARP |
| Product | Custom Age 625+ Head Stud Kit |
| Engine | RB26DETT |
| Material | Custom Age 625+ super-alloy |
| Tensile strength | 260,000–280,000 psi |
| Thread / diameter | M12 x 1.5 |
| Torque (ARP Ultra-Torque) | 140 ft-lb (190 Nm) in three steps |
| Instructions | ARP instruction sheet (link below) |
| Part number(s) | 202-4208 |
Contents
1 x ARP head stud kit – studs, nuts and washers for one engine

Need Help Finding the Right Part?
We’ll Track It Down for You
We know how frustrating it can be searching for the right part. If it’s not listed on our site, that doesn’t mean we can’t source it.
Fill out the quick form below and our team will track it down for you.

