This is the outer tie rod end with the ball joint. While it's technically possible to replace only the outer ball joint it's our experience that the inner sees just as much wear as the outside and they should be replaced together. But if the inner joint is fine, the outer ball joint boot is damaged, or any other reason this is a the OEM-type replacement. Worn tie rod ball joints will give a loose and disconnected steering feel as well as clunking sounds. Since the tie rods are the only direct link between your steering wheel and the wheels it's crucial to inspect tie rods annually, or more often on track-driven cars. Replace the tie rods if any play or wear is evident.
This is an OEM tie rod end manufactured by Lemfoerder, an original supplier to BMW for this part, as well as many other mounts and bushings. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.
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