This black boot/tailgate panel is a great addition for your Smart Fortwo 451. It is designed to fit perfectly on the rear of your vehicle, and it comes with two manufacturer part numbers: A4517570006 and A4517500009. The panel is made for Smart brand vehicles and is not a universal fitment. The colour of the panel is black, and it can be used as a replacement or an upgrade for your current boot/tailgate panel. It is not a performance part, and it is not a classic part. This panel can be used to improve the exterior of your car, and it is a great way to give your vehicle a fresh look.