ARP Head Stud Kit - Nissan CA18DE, CA18DET, CA16DE/T Undercut Studs - 202-4702 QL-50 Series -8 o-ring boss (ORB) ports

-8 o-ring boss (ORB) ports on both ends and another -8 ORB port located at the middle of the rail

A remote button kit (PN 30-3610

Precision CNC Machined - 6061-T6 Aluminum

AR1-SPG6 kit features a Sport pressure plate for a nice upgrade

As with all our products

ARP Head Stud Kit - Nissan CA18DE, CA18DET, CA16DE/T Undercut Studs - 202-4702 QL-50 Series -8 o-ring boss (ORB) portsIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, theres not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to aircraft quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat treated