Genuine OEM Audi Front Brake Pad Wear Sensor, part number 8J0615437. This sensor is an essential safety component that continuously monitors the thickness of the brake pads, alerting the driver when they reach a critical wear level and require replacement. It is positioned at the front brake assembly. Weighing 0.037 kg, this genuine OEM sensor provides accurate and timely warnings, ensuring optimal braking performance and preventing costly damage to brake rotors.