This part is listed by BMW as BMW part number 33306878029 (33 30 6 878 029) and is described as the rear steering arm for the left side on G05 X5, G06 X6, and G07 X7. This arm controls the toe alignment on the rear suspension. Worn bushings will allow too much variation in the rear alignment which will be felt as a wandering, loose, or unstable feeling in the rear as well as uneven and poor tire wear.
This part is manufactured by an aftermarket supplier of European auto parts, including many suspension components. While not carrying OEM status, this part follows the design of the original very closely and uses similar materials. An aftermarket part may even have the same TUV approval as its OEM counterpart. The brand may even be OEM to another manufacturer besides BMW. This aftermarket brand has a two year warranty - the same as Genuine BMW and OEM brands.
BMW Fitments:
X5 Series
G05 X5 (2019+) > X5 xDrive M50i (2019+)
G05 X5 (2019+) > X5 xDrive M60i (2019+)
G05 X5 (2019+) > X5 xDrive40i B58C (2019-2023)
G05 X5 (2019+) > X5 sDrive40i RWD B58C (2019-2023)
G05 X5 (2019+) > X5 xDrive50i (2019-2023)
X6 Series
G06 X6 (2020+) > X6 sDrive 40i B58C (2019-2023)
G06 X6 (2020+) > X6 xDrive 40i B58C (2019-2023)
G06 X6 (2020+) > X6 xDrive M50i (2020+)
G06 X6 (2020+) > X6 xDrive M60i (2020+)
X7 Series
G07 X7 (2019+) > X7 M50i
G07 X7 (2019+) > X7 M60i
G07 X7 (2019+) > X7 xDrive40i B58C (2019-2022)
G07 X7 (2019+) > X7 xDrive50i
