Keep your anti-lock brakes reading wheel speed accurately with the Dorman - OE Solutions ABS Wheel Speed Sensor Tone Ring, part number 917-538. It fits many vehicles, among them the 1998-2004 Audi A6 Quattro, 1997-2003 Audi A8 Quattro and 2001-2003 Audi S8, and it is cataloged for the front left and front right positions. See the "Vehicles it fits" section for the full list. It directly replaces the original equipment tone ring on the listed applications as a cost-effective repair.
The tone ring is the toothed ring that the ABS wheel speed sensor reads as the wheel turns. That reading gives the anti-lock brake system its wheel-speed signal. If a cracked, corroded or fatigued original ring is behind your ABS fault, this ring replaces it.
- Direct replacement: built to take the place of the stock tone ring and work the same way on the listed applications.
- Effective fix: designed for ABS problems traced to a cracked, corroded or fatigued factory ring.
- Thoroughly tested: checked on the vehicle and in the laboratory for trouble-free operation.
- Trustworthy quality: backed by a team of designers and engineers in the United States.
Signs the tone ring may need replacing include an ABS warning light, ABS engaging unexpectedly at low speed, or a ring that is visibly cracked or corroded. A faulty wheel speed sensor or damaged wiring can cause the same symptoms, so diagnose the cause before replacing parts.
Frequently Asked Questions
What does an ABS tone ring do?
It is a toothed ring that the ABS wheel speed sensor reads as the wheel turns. That reading gives the anti-lock brake system its wheel-speed signal.
Which vehicles does the Dorman 917-538 fit?
It fits the 1998-2004 Audi A6 Quattro, 1997-2003 Audi A8 Quattro and 2001-2003 Audi S8, among others. Check the "Vehicles it fits" section for every listed application.
Which wheel position is this tone ring for?
It is cataloged for the front left and front right positions on the listed applications.
What are signs a tone ring may need replacing?
Signs include an ABS warning light, ABS engaging unexpectedly at low speed, or visible cracks or corrosion on the ring. A bad sensor or wiring can cause similar symptoms, so diagnose first.
How is this tone ring tested?
It is tested on the vehicle and in the laboratory for trouble-free operation. It is backed by a team of designers and engineers in the United States.
