Before scouring the internet for a replacement DIY...have you run that part number through one of the online part database sites to see if that part is used in your car?
If not, go to the following link, type in the last 7 digits of your VIN, then paste the part number you gave us into the part number (cross-reference) box to see if that part is used on the f06/f12/f13 6 series:
https://www.realoem.com/bmw/enUS/select