The proprietary ARP materials used to make our Porsche head studs, thru-bolts, and connecting rod bolts is about 33% stronger than the stock material, with a 220,000psi 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.

We recommend replacing the stock Porsche head studs on any rebuild and upgrading to the ARP 2000 heads studs when using Nickies cylinders. These studs are compatible with all cylinder types and brands. Price includes 16 black oxide coated ARP 2000 head studs for the Porsche 356 and 912 and ARP assembly lube. Stock head stud fasteners are utilized with these studs (not included). We recommend torquing heads to stock torque specifications using the factory prescribed torquing method.