Hardware & Fasteners: LN Engineering ARP Custom Age 625 Porsche 911 head stud kit inc. lube, nuts, and washers. (was 203-00)

ARP's head studs are proven and tested for a lifetime of reliability and performance and are required for use with Nickies cylinders. (ARP or equivalent upgraded head studs can be used where OE head studs are not compatible or recommended).

Case savers are recommended for all magnesium cases when replacing the head studs.