The part number looks like 12 1 172 CE03 Maybe BMW doesn't manufacture it, but that's where I got it from. It's the size of a spark plug socket, 23Nm, Made in Germany.
Mid Sept. If you haven't registered, it's probably full. I may come up for the Shenandoah school in Oct. I know. It does not look like a regular BMW P/N.
I don't know where to get the verification tool or how much it is, but we have one where i work and it's nice to have around. As for the griots free calibration, what's it going to cost to ship it back and forth every time you feel it may not be exactly accurate.