ARP stud bolt Kit cylinder head fits BMW E46 M3 & Z4 M S54B32

ARP Head Stud Kit for BMW 3.2l E46 M3/S54, inline 6, ARP2000, ARP 12pt. ARP heavy duty studs are made of high strength and heat treated 8740 chrome-moly forged steel. Due to advanced manufacturing processes ARP studs reach highest strength and stability Tensile strength of 200.000 psi (13,8t/cm²) Absolutely perfectly round and straight studs for a first-class assembly All kits come with ARP hardened washers and high quality nuts Harder, more durable, stable, and processed better than any OEM products 10 times stronger threads than the competetive products by thread cut after curing Highest ARP quality product for professional use Fully reusable (Click on the PDF box to download instruction)