Keep your Audi's front suspension located and steering-true with the Delphi control arm and ball joint assembly (TC801). This is the front left upper rearward arm, a direct-fit replacement that pairs the control arm with an integrated ball joint so the wheel stays properly positioned while the suspension and steering move through their travel. It drops in for the 1996-2009 Audi A4 and A4 Quattro, 1998-2005 Volkswagen Passat, 1997-2004 Audi A6, 1998-2004 Audi A6 Quattro, and additional Audi A6, A8, A8 Quattro, allroad quattro, RS6, S4, S6, and S8 models — see the Buyer's Guide tab for the full list and your engine.
- OE-validated testing: withstands temperatures below -40°C and over 120°C and 720 hours of salt spray, with extensive dimensional and material analysis for close OE-to-aftermarket compatibility.
- Verified materials: 100% crack detection and ultrasonic flaw detection confirm the material matches OE specifications.
- Precision joint: ball studs machined to micron tolerances for durability and smooth joint operation.
- Built to last: robot-welded for consistent quality, with anti-corrosion protection applied for corrosion prevention and improved appearance.
If a worn arm or ball joint on your Audi A4 or Passat is causing clunks, loose steering, or uneven front tire wear, this replaces it.
