The proprietary ARP materials used to make thes Porsche 911 head studs is ~60% stronger than the stock material, with a 265,000+ psi tensile strength and improved fatigue characteristics.

Use of ARP fasteners in your Porsche will ensure that your engine will be assembled with the most accurate and even clamping load possible, and will maintain that spec for prolonged periods of operation.

Price includes 24 ARP head studs, 12 pt nuts, ground washers, and ARP assembly lube. Case savers must be used with these studs on all mag case engines with ARP head studs.

The price shown is valid only when purchased with qualifying Nickies or cylinder reconditioning service.

Application note: Case savers must be used with these studs on all mag case engines with ARP head studs. An alternative head stud for mag case engines are the factory 993TT dilivar studs, Porsche part number 993.101.170.51. Although not listed, LN Engineering carries these studs too. Just call 815-472-2939.