This product is a genuine ABS wheel speed sensor designed for use in Volkswagen and Audi vehicles. The part number for this sensor is WHT003864C. It is a high-quality replacement for the original sensor and is specifically designed to meet the specifications and performance standards of the original equipment. This sensor is responsible for detecting the speed of each wheel and relaying that information to the vehicle's ABS system, allowing for proper braking and traction control. It is a crucial component for the safe operation of the vehicle and is an essential part for maintaining optimal performance.