The Peterbilt 388 2010-2017 Passenger DPF Box Covers are made of durable stainless steel. These covers are designed to fit most Peterbilt 388 2010-2017 makes and models. The set includes both upper and lower panels, which attach easily using existing hardware and supplied silicone. With their sleek stainless steel construction, these covers not only enhance the appearance of your vehicle but also provide practical protection for your DPF box. Upgrade your Peterbilt 388 with these high-quality covers that offer both style and functionality.