Keep your BMW's front suspension tight and precisely located with the DELPHI control arm and ball joint assembly TC4536, a front upper unit that installs as a direct-fit replacement for the listed applications. It positions the wheel while its integrated ball joint allows the steering and suspension travel that a worn original can no longer control.
It fits 2017-2023 BMW 530I and 540I, 2018-2020 BMW 530E and M550I XDRIVE, 2018 BMW 540D XDRIVE, 2018-2019 BMW 640I XDRIVE GRAN TURISMO, and 2020 BMW 840I and M850I XDRIVE GRAN COUPE — see the Buyer's Guide tab for the full list of 14 applications.
- Tested to the extreme: built with Delphi's OE safety technology and validated below -40°C, above 120°C, and through 720 hours of salt spray.
- Inspected 100%: crack detection and ultrasonic flaw detection help materials match OE specifications.
- Precision studs: ball studs machined to micron tolerances for durable, smooth joint operation; control arms are robot-welded for consistency.
- Anti-corrosion protection: applied to each part for corrosion prevention and enhanced aesthetics.
Signs the original may need replacing include a clunk over bumps, loose or wandering steering, and uneven tire wear. Diagnose the cause before replacing.
Interchange: 31 12 6 870 025 · 31 12 6 870 026
31126870025 · 31126870026
This part cross-references / interchanges with the following part numbers:
31 12 6 870 025, 31 12 6 870 026
