Keep the front suspension tracking true with the Delphi control arm TC1390, a front left lower forward unit that combines the control arm with an integrated ball joint. It drops in as a direct-fit replacement for the 2004-2007 BMW 525I and 530I, the 2004-2005 545I, the 2006-2010 550I and M5, and the 2008-2010 528I and 535I — locating the wheel through its travel while the ball stud allows the steering and suspension movement your BMW needs.
Signs this control arm and ball joint assembly may need replacing include clunking over bumps, loose or wandering steering, and uneven front tire wear. Because the ball joint is integrated, replacing this unit renews both in one part. Consult the vehicle service information for the correct fasteners and whether they may be reused.
Interchange: 31 10 2 348 047 · 3110 4026 719 · 31 12 4 046 437 · 3112 6760 183 · 3112 6765 995 · 31 12 6 774 825 · 101-5957 · 102-5957 · 622.34059 · 520-997
31102348047 · 31104026719 · 31124046437 · 31126760183 · 31126765995 · 31126774825 · 1015957 · 1025957 · 62234059 · 520997 · CB14233 · CB14233PR · CK620125 · K620125 · RK620125 · CMS10112 · GS10112 · MS10112 · JTC1073
This part cross-references / interchanges with the following part numbers:
Is this the right control arm for a BMW 528I?
Yes. This BMW 528I control arm fits the 2008-2010 528I, plus the 2004-2007 525I and 530I, the 2004-2005 545I, and the 2006-2010 550I and M5. Check the Buyer's Guide tab to confirm your vehicle.
What position on the vehicle does the TC1390 cover?
It is the front left (driver-side) lower forward control arm with an integrated ball joint.
Do Delphi control arm reviews reflect OE-level testing?
Delphi applies its OE expertise to the aftermarket line, using 100% crack and ultrasonic flaw detection plus 720 hours of salt-spray exposure to confirm the materials match OE specifications.
Do I need to replace both sides?
This listing is for one front left lower forward assembly, sold individually. Replacing suspension parts as a matched pair is good practice for balanced handling, so order a second for the right side if needed.
Are mounting fasteners included?
The listing does not specify included fasteners. Consult the vehicle service information for the correct fasteners and whether they may be reused.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
