Your Audi will love you after you update the S4 License Plate Boxes. License Plate Boxes let you mount your plate anywhere. S4 License Plate Boxes keep driver's smiling. Put your info on display with Custom License Plate Boxes. It's nice to have your own style incorporated with S4 License Plate Boxes. Relocating due to custom installs made easy with License Plate Boxes. Twist, turn it, angle it with modified License Plate Boxes.