This DELPHI wheel speed sensor, part code SS21506-12B1, is designed to provide precise rotational speed information for each wheel. This data is crucial for the proper functioning of your vehicle's Anti-lock Braking System (ABS) and Electronic Stability Control (ESC) systems. A faulty wheel speed sensor can lead to warning lights on your dashboard and compromised safety features. This sensor is manufactured to meet OE specifications, ensuring a reliable and direct fit for your vehicle. Replace your worn or damaged sensor with this high-quality component from DELPHI for restored safety and performance.