ARP HEAD STUD KIT NISSAN CA18DET / SR20DET 200sx Silvia.
Using premium grade 8740 alloy that is rated far superior to “aircraft” quality each stud is placed vertically in special racks and precisely heat-treated to 190,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers.
ARP manufactures to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned. Premium quality parallel ground washers are also included with each kit.