ARP 201-5002 Head Stud Kit for BMW E46 M3/S54

Name: ARP Main Stud Kit for BMW E46 M3/S54

Brand: ARP

Part Number: ARP-201-5002

Country of Manufacture: United States

There are many important reasons to use ARP main stud kits, including eliminating main bearing cap walk and fretting, and protecting the block threads. All kits include hardened parallel-ground washers and high-quality nuts. Some applications feature oil baffle supports and specially designed spacer studs with serrated lock nuts to position the baffle and securely fasten it. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat treatment to create a fastener with threads 2000% stronger than others.

ARP recommends using main studs instead of bolts whenever possible for several key reasons. First, more accurate torque readings are achieved because the studs do not twist in the block. All clamping forces are applied on a single axis. Also, less stress is exerted on the block threads, contributing to a longer block life (critical in aluminum blocks). Finally, engine assembly is made easier, and correct cap alignment is ensured every time.

ARP® - Automotive Racing Products is a manufacturer of engine and drivetrain fasteners and bolts, from OEM replacement parts to specialized components for racing applications. ARP is a global leader in fastener technology. Their catalog ranges from high-performance, quality OEM replacement parts to specialized components for Formula 1, IndyCar, NASCAR, NHRA drag racing, and marine applications. To ensure optimal quality control, ARP has become exceptionally self-sufficient and now controls all aspects of the manufacturing process. In this way, ARP has succeeded in establishing itself as a leading brand in the market.