his ARP head stud kit uses a proprietary ARP2000® alloy that are rated far superior to “aircraft” quality alloy steels. Each stud is placed vertically into special racks and precisely heat-treated to 220,000 psi for the ARP2000® material. This procedure ensures complete heat penetration and the results are far superior.
This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat when the material is easier to machine).
Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned something that won’t happen with inferior-quality head studs.
Engine Compatibility:
- Nissan RB20DE
- Nissan RB20DET
- Nissan RB25DE
- Nissan RB25DET
- Nissan CA18DE
- Nissan CA18DET
Note: When ordering for CA18 spare studs & nuts will be left over due to the kit supplied for 6ycl vehicles.