Keep your BMW's front suspension precisely located with the Delphi control arm and ball joint assembly TC1226 — a front left lower unit that drops in on the 1997-2003 BMW 540i and 2000-2003 BMW M5. The arm positions the front left lower suspension and its integrated ball joint lets the wheel steer and travel while keeping suspension geometry in check.
- OE-focused validation: Delphi applies its OE steering expertise, testing to withstand temperatures below -40°C and over 120°C plus 720 hours of salt spray, with dimensional and material analysis for close OE-to-aftermarket compatibility.
- Inspected materials: 100% crack detection and ultrasonic flaw detection help confirm materials match OE specifications.
- Precision ball stud: ball studs machined to micron tolerances for durability and smooth joint operation.
- Built consistent: robot-welded for consistent quality, with anti-corrosion protection applied for corrosion prevention and enhanced appearance.
Worn control arm bushings or a failing ball joint can show up as clunking over the front end, loose or wandering steering, and uneven tire wear. If a worn front left lower arm or ball joint is the cause, this assembly replaces both in one part. Have the suspension inspected to confirm the cause before replacing.
Interchange: 3112 1141 961 · 101-4943 · 102-4943 · BW-H206 · 520-939 · 502-1161
31121141961 · 1014943 · 1024943 · BWH206 · 520939 · 5021161 · KSC4536 · CB14143 · CB14143PR · K620119 · RK620119 · FA4498 · CMS10168 · GS10168 · MS10160 · MS10168 · JTC1005
This part cross-references / interchanges with the following part numbers:
3112 1141 961, 101-4943, 102-4943, BW-H206, 520-939, KSC4536, CB14143, CB14143PR, K620119, RK620119, FA4498, CMS10168, GS10168, MS10160, MS10168, 502-1161, JTC1005
