2mm as the centering shaft of the cap nut is 4mm long

E52 and is a direct replacement for 35311152237

If you are running a carbon CSL airbox then it is critical to retain the OEM mounting as the vibrations can lead to carbon failures

Functions exactly as the original BMW connectors do including the internal seal

E36 M3 US 3-Spoke (M Technic) Steering Wheel Airbag Roundel Replacement Anthracite 2mm as the centering shaftAn Original BMW replacement for an original BMW problem. Replace that dented or damaged roundel and refurbish your airbag cover in the process. Genuine BMW airbag roundel and rivet kit. Just add tools and labor. Please note: There is NO tech support on this job. There is a guide you can follow but you are responsible for every aspect of this work. Link is below. https: www. mforum. net forum e36 m3 1992 1999 diy ac 6836 diy e36 us 3 spoke m technic