This part is listed by BMW as BMW part number 22119423380 (22-11-9-423-380) and is described as Genuine BMW Left Engine Adapter/Roll Restrictor for U11 X1 xDrive28i/M35i (2023+) and U10 X2 xDrive28i/M35i (2024+).
BMW Fitments:
X1 Series
U11 X1 (2023+) > X1 xDrive28i B48P (2023+)
U11 X1 (2023+) > X1 xDriveM35i B48R (2023+)
X2 Series
U10 X2 (2024+) > X2 xDrive28i B48P (2024+)
U10 X2 (2024+) > X2 xDriveM35i B48R (2024+)
