Help maintain proper steering geometry and smooth suspension travel with the Delphi control arm and ball joint assembly (MPN TC1391), a direct-fit front right lower forward unit for the listed applications. It fits many BMW models, among them the 2008-2010 BMW 528I, 2008-2010 BMW 535I and 2006-2010 BMW 550I. See the Buyer's Guide tab for the full list and engine-level fitment. The arm locates the wheel while the integrated ball joint allows steering and suspension movement. Signs it may need replacing include clunking over bumps or when turning, loose steering, or uneven tire wear.
- OE expertise: Delphi applies its OE steering expertise, with dimensional and material analysis for close OE-to-aftermarket compatibility.
- Extreme testing: tested below -40°C and above 120°C and through 720 hours of salt spray.
- Quality inspection: 100% crack and ultrasonic flaw detection so materials match OE specifications; ball studs machined to micron tolerances for smooth joint operation.
- Construction and protection: robot welding for consistent quality, plus anti-corrosion protection for corrosion prevention and enhanced appearance.
Sold individually; replacing the left and right sides together is recommended for balanced handling.
Interchange: 3110 4026 720 · 31 12 4 046 438 · 3112 6760 184 · 3112 6765 996 · 3112 6774 826 · 101-5958 · 102-5958 · 622.3406 · BW-H215 · 520-998 · 507-1370
31104026720 · 31124046438 · 31126760184 · 31126765996 · 31126774826 · 1015958 · 1025958 · 6223406 · BWH215 · 520998 · 5071370 · 31102348046 · CB14234 · CB14234PR · CK620126 · K620126 · RK620126 · FA4500 · CMS10113 · GS10113 · MS10113 · JTC1074
This part cross-references / interchanges with the following part numbers:
31102348046, 3110 4026 720, 31 12 4 046 438, 3112 6760 184, 3112 6765 996, 3112 6774 826, 101-5958, 102-5958, 622.3406, BW-H215, 520-998, CB14234, CB14234PR, CK620126, K620126, RK620126, FA4500, CMS10113, GS10113, MS10113, 507-1370, JTC1074
