Built to reduce noise and vibration at the control arm pivot, the Delphi Control Arm Bushing, part number TD437W, is cataloged for the front upper control arm position, including front upper rearward. It is listed for many models, among them the 1998-2005 Volkswagen Passat, 1998-2004 Audi A6 and 1996-2010 Audi A4. See the "Vehicles it fits" section for the full list and engine details.
A suspension control arm bushing cushions the joint between the control arm and its mounting point. It lets the arm move with the suspension and helps absorb road vibration. TD437W is a direct-fit replacement for the listed applications and draws on Delphi's original-equipment background.
- OE background: Delphi's OE safety technology is fitted to millions of vehicles worldwide, and the company applies that expertise to its aftermarket steering portfolio.
- Designed to OE standards: Delphi performs extensive dimensional and material analysis aimed at close compatibility between the OE part and its aftermarket replacement.
- Tested to extremes: Delphi tests its parts at temperatures below -40°C and above 120°C and exposes them to 720 hours of salt spray.
- Noise and vibration: manufactured for consistent life and to reduce noise and vibration.
Signs a control arm bushing may need replacing include clunking or knocking over bumps, a loose or wandering steering feel, added vibration, uneven tire wear, and visible cracking or separation at the bushing. Several suspension and steering faults cause similar symptoms, so diagnose the cause before replacing parts.
Frequently Asked Questions
Is Delphi TD437W the right control arm bushing for a 1996-2010 Audi A4?
TD437W is listed for the 1996-2010 Audi A4 in the front upper control arm position. Check the "Vehicles it fits" section to confirm your exact vehicle.
Will it work as a control arm bushing for a 1998-2005 Volkswagen Passat?
Yes. It is listed for the 1998-2005 Volkswagen Passat and the 1998-2004 Audi A6, along with other Audi models shown in the "Vehicles it fits" section.
What does a control arm bushing do?
It cushions the joint between the control arm and its mount. This lets the arm move with the suspension while absorbing road vibration and noise.
How does Delphi test this bushing?
Delphi tests its parts at temperatures below -40°C and above 120°C and exposes them to 720 hours of salt spray. Its bushings are designed to OE standards.
What are signs of a worn control arm bushing, and is anything needed after installing?
Signs include clunking over bumps, wandering steering, vibration and uneven tire wear. Having the wheel alignment checked after installation is a good idea.
