Genuine OEM Audi Brake Pad Wear Sensor, part number 8R0615121. This sensor is a critical safety component, designed to detect when the front left brake pads have worn down to a critical level, alerting the driver for timely replacement. It ensures the braking system remains effective and safe. Weighing 0.019 kg, it provides precise fitment. Genuine OEM sensors guarantee accurate signal characteristics and durability, crucial for reliable brake system monitoring and driver safety.