This is an ARP 247-4202 head stud kit for 1998.5-2024 24V 5.9 or 6.7 Cummins. ARP2000 alloy. I upgraded to stronger head studs as I plan on running a lot more boost and these have been laying around for over a year. I was making around 600HP with these and never had head gasket issues or any issues at all for that matter. All threads, washers and bolts have been cleaned ready for install.
