This product is a genuine Volkswagen door wiring harness with the part number 3CN971120D. It is designed specifically for use with Volkswagen vehicles and is used to connect the electrical components of the door, such as the power windows, locks, and mirrors. This wiring harness is a direct replacement for the original part and is made to the same high-quality standards as the original equipment. It is important to use genuine Volkswagen parts to ensure proper fit and function of your vehicle's electrical system.