ARP 201-5002 Main Stud Kit for BMW E46 M3/Z4 M S54 3.2L I6

Vehicle Fitment

• 2001-2006 BMW M3 (E46) (S54 3.2L I6)
• 2006-2008 BMW Z4 M (E85/E86) (S54 3.2L I6)

Features

• Prevents main cap walk and fretting
• Protects threads in the engine block
• 8740 chromoly steel construction for strength
• Heat-treated to 190,000 psi tensile strength
• Precision J-formed threads rolled after heat treatment
• Hardened parallel-ground washers included
• High-quality standard hex nuts included
• Black oxide finish for corrosion resistance

Specifications

• Socket Size: 12mm 12-point, 4mm Allen
• Thread Size: M12x1.5
• Torque: Tighten in 3 steps (20 ft/lbs, 40 ft/lbs, 60 ft/lbs)
• Finish: Black oxide

Included Components

• 1x Main Stud Kit
• 12x 12-point nuts
• 12x Hardened parallel-ground washers
• 1x ARP logo sticker

Product Description

The ARP 201-5002 Main Stud Kit is engineered for BMW's S54 3.2L inline-6 engines, specifically in the E46 M3 and Z4 M models. It prevents main cap walk and fretting, ensuring a stable and reliable engine bottom end.

Constructed from 8740 chromoly steel and heat-treated to 190,000 psi, the studs feature J-formed threads rolled after heat treatment for exceptional durability. The kit includes hardened parallel-ground washers and high-quality hex nuts with a black oxide finish for added corrosion resistance.

Ideal for street or track applications, this kit provides superior clamping force to maintain engine integrity under high-stress conditions, making it an essential upgrade for performance enthusiasts.