E46 M3 S54 ARP Cylinder Head Stud Kit 8740 Chromoly, Part Number 200-4101

For the E46 M3’s S54 - a naturally aspirated engine that revs hard, runs hot and rewards precision. These ARP 8740 chromoly studs (part number 200-4101) replace the factory stretch bolts to lock the head down with repeatable clamping force. Critical for stage 1+ fast road builds, track day use, or any S54 where you’ve raised compression, added cams, or run sustained high-RPM loads.

• E46 M3 specific: Designed for the S54’s 11mm x 1.25 thread pitch and deck height - not a generic BMW kit
• Stage 2 & beyond ready: Handles increased cylinder pressure from forced induction, nitrous or aggressive NA tuning without creep
• Decat or track day? Yes. No thermal cycling issues - unlike factory bolts, these won’t yield after repeated heat cycles
• OEM plus fitment: Uses original torque sequence and spec; no re-tap, no machining, no guesswork
• What’s in the box: Full set of studs + matching 12-point nuts - nothing missing, nothing extra

Search terms this kit actually matches: E46 M3 S54 head studs, ARP 200-4101, S54 stage 2 fastening, S54 decat build studs, E46 track day head studs, S54 OEM plus upgrade, S54 cylinder head fasteners, S54 head gasket retention, E46 M3 head bolt to stud, S54 high-RPM clamping.