Genuine OEM Volkswagen Brake Pad Wear Sensor, part number 7P0907637. This sensor is designed to monitor the thickness of the brake pads and alert the driver when they reach a critical wear level, indicating the need for replacement. It is typically installed directly into the brake pad assembly. This lightweight sensor weighs approximately 0.027 kg and measures about 0.15 meters in length. Using a genuine OEM sensor ensures accurate wear detection and reliable communication with the vehicle's warning systems, crucial for maintaining optimal braking safety.