The Genuine Audi Disc Brake Pad Wear Sensor (part number 4H0615121B) is a high-quality replacement part for Audi vehicles. This sensor is designed to detect when the brake pads are worn down and need to be replaced. It is made from durable materials and is specifically engineered to fit and function seamlessly in Audi models. This brake pad wear sensor is an essential component for maintaining the safety and performance of your vehicle's braking system.