On F25 X3 and F26 X4 models, the front upper ball joint is sold separately from the control arm/tension strut. This OEM ball joint firs the left or right side, and is sold individually.
Worn X3/X4 ball joints will affect the ride, handling, and steering of the car and can also cause clunking noises and vibrations. To restore steering precision and taught handling, replace the tension strut ball joint at the first sign of wear.
This part is listed by BMW as BMW part number 31106787665 (31-10-6-787-665), and is described as OEM Ball Joint for Control Arm (Tension Strut) on BMW F25 X3 & F26 X4.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
X3 Series
F25 X3 (2011-2017) > X3 sDrive28i
F25 X3 (2011-2017) > X3 xDrive28d Diesel
F25 X3 (2011-2017) > X3 xDrive28i
F25 X3 (2011-2017) > X3 xDrive35i
X4 Series
F26 X4 (2015-2018) > X4 28i xDrive
F26 X4 (2015-2018) > X4 35i xDrive
F26 X4 (2015-2018) > X4 M40i xDrive