Genuine OEM Audi ABS Sensor, part number WHT003864B. This sensor is crucial for the anti-lock braking system, accurately monitoring wheel speed to provide essential data for the vehicle's stability control and braking functions. It is designed for installation on the rear left wheel assembly. Weighing only 0.011 kg, this compact sensor ensures precise signal characteristics. Choosing a genuine OEM sensor guarantees exact calibration and signal characteristics, which are vital for the proper functioning of advanced safety systems like ABS and ESP.