Keep steering tight and suspension movement smooth with the Delphi ball joint TC543, a direct-fit front left lower unit for the 1989-1991 Audi 80, 1989-1990 Audi 80 Quattro, 1989-1991 Audi 90, and 1989-1990 Audi 90 Quattro (see the Buyer's Guide tab for engine details). This ball joint provides the pivoting connection between the control arm and the steering knuckle, letting the suspension travel and the wheel steer.
Delphi draws on its OE safety expertise for its aftermarket steering portfolio, testing to the extreme: parts withstand temperatures below -40°C and over 120°C and endure 720 hours of salt spray, with dimensional and material analysis for close OE compatibility.
- Forged construction: built from high-quality forgings for increased strength and smooth operation.
- Chloroprene rubber boot: improves durability and helps prevent premature failure.
- Micron-tolerance machining: designed for durable, smooth joint operation.
- Anti-corrosion protection: applied to each part for corrosion prevention and enhanced appearance.
Signs the original may need replacing include clunking or knocking over bumps, loose or wandering steering, and uneven front tire wear. If a worn front left lower ball joint is the cause, this replaces it.
Interchange: 893 407 365 A · 101-4091
893407365A · 1014091 · B90500 · B9911 · B9911PR · BJ12023 · K9911 · GK9911 · MK9911 · JBJ600
This part cross-references / interchanges with the following part numbers:
893 407 365 A, 101-4091, KBJ4107, B90500, B9911, B9911PR, BJ12023, K9911, GK9911, MK9911, JBJ600
