Genuine OEM Volkswagen Exterior Mirror Housing, part number 5Z0857507H1NN. This component is the black housing for the passenger side exterior mirror assembly, identified as number 2 in the diagram. It encloses and protects the mirror glass and adjustment mechanisms from the elements. The housing is finished in black with the color code 1NN. Genuine OEM mirror housings are designed for exact fitment, ensuring proper alignment and integration with the vehicle's body.