This high-quality trunk lid lock actuator cylinder is perfect for your W221 Mercedes 2011 S400. Made in Germany with durable plastic material and a sleek black color, it offers a direct replacement fitment type for your vehicle.

The upper and rear placement on your car makes it easy to install, without any modifications needed. Plus, with a matte and textured finish, it will blend in nicely with your vehicle's exterior. It comes with an OE/OEM part number of 221-75-00-161 and a manufacturer warranty of 1 month. Don't miss out on this universal fitment part that will make your trunk lid lock and unlock with ease.