Found the most recent part number on Real Oem:
https://www.realoem.com/bmw/enUS/par...407&series=E84
Looks like the most recent revision is 11747649407, or Pierbug part number 7.00887.22.0
By searching by Vehicle on ECS, I got to the old version which was labelled by ECS as a "Wastegate Actuator", now there's a part I've heard before coming from VW/Audi. The most recent part number is on ECS, but not listed as compatible with E84 N55's:
https://www.ecstuning.com/b-pierburg...747649407~pie/
Now, I'm assuming RealOem is the better source for which part to use, what do you think?