This DELPHI Wheel Speed Sensor, part code SS21511-12B1, is designed to provide precise rotational speed information for each wheel. Accurate data is crucial for the proper functioning of your vehicle's Anti-lock Braking System (ABS), Traction Control System (TCS), and Electronic Stability Control (ESC). A faulty wheel speed sensor can lead to warning lights on your dashboard and compromised safety system performance. This sensor is engineered for a direct fit, ensuring easy installation and reliable operation. Trust DELPHI for quality and performance in your vehicle's critical systems.