This is a used rear Electric Active Anti-Roll Swaybar (EARS) that was removed from a '17 540xi with dynamic driving package. This sway bar may fit many different vehicles of similar generation (G12 7-series, G-chassis 8-series). Please verify fitment of the supplied part number against the VIN of the vehicle it would be going into. Here are the supersessions of this part number:

Listed oldest to newest:

37 10 6 877 695
37 10 6 882 655
37 10 6 883 450
37 10 6 884 052
37 10 6 886 159
37 10 6 894 922
37 10 6 897 266
37 10 6 899 785

This is a programmable part so there may be follow-up programming or commissioning that will require specialized software and equipment.
37 10 6 884 052
37 10 6884052
37106884052