ABS 10012871 Tone Ring

The ConMet ABS Tone Ring 10012871 is a stamped reluctor ring used in wheel-end assemblies to generate the magnetic pulses required by ABS wheel speed sensors. As the wheel turns, the tone ring’s teeth or gaps pass by the sensor to provide a continuous rotational signal. This model is often used across various makes of trucks and trailers.
 
Though 10012871 is still referenced, note that in some catalogs it has been superseded by 10019967.