This DELPHI wheel speed sensor, part code SS21328-12B1, is designed to provide precise rotational speed information for each wheel. It plays a crucial role in the proper functioning of your vehicle's Anti-lock Braking System (ABS) and Electronic Stability Control (ESC) systems. Reliable sensor performance is essential for maintaining vehicle safety and handling, especially during braking and cornering maneuvers. Manufactured by DELPHI, a trusted name in automotive components, this sensor meets high-quality standards for durability and accuracy.