ARP 201-5002 Pro Series Main Studs for BMW S54 Engine

ARP Pro Series Main Studs are engineered to provide superior strength and reliability for high-performance BMW S54 engines found in the E46 M3. These precision-manufactured main studs eliminate common failure points including main cap walk and fretting while protecting the threads in your engine block during installation and removal.

Key Features:

• Manufactured from premium 8740 chrome moly steel with 200,000 PSI tensile strength
• Precision CNC-machined threads provide accurate and consistent torque loading
• Eliminates main cap movement and fretting that can occur with factory bolts
• Protects engine block threads from damage during assembly and disassembly
• Includes hardened parallel-ground washers for even load distribution
• Complete kit with ARP Ultra-Torque fastener assembly lubricant

ARP studs are manufactured in-house using state-of-the-art cold forming equipment and proprietary heat treat processes. Each stud is precision-engineered to exacting tolerances, making them essential for any performance rebuild or forced induction application where cylinder pressure and stress levels exceed factory specifications.

Application: BMW S54 3.2L inline-6 engine (E46 M3, Z3 M Coupe/Roadster)