This product is a Genuine VW Volkswagen Door Wiring Harness, part number 5C1971161. It is designed specifically for Volkswagen vehicles and is used to connect the electrical components of the door, such as power windows, locks, and speakers. This wiring harness is an authentic and high-quality replacement for damaged or malfunctioning original harnesses. It is compatible with various VW models and is essential for proper functioning of the door's electrical system.