Upgrade your Peterbilt 388 with heavy-duty deck plates and air line boxes built for long-lasting performance and a clean, custom look. These essential components help you organize your trailer hookups, protect vital systems, and give your truck a professional finish that stands out on the road. Choose from smooth aluminum, diamond tread, or stainless steel deck plates in a range of sizes to fit your frame setup. Aluminum offers a lightweight, paintable surface, while stainless steel provides a bright, corrosion-resistant shine. The diamond tread design adds traction and toughness-perfect for daily use and maintenance access. The air line boxes in this lineup are designed for easy access and reliability. Available in recessed, top-mounted, and sectionalized styles, they make managing your trailer air, 7-way electrical, and hydraulic hookups simple and organized. Each box provides a secure, weather-resistant housing to keep your connections protected and ready for the next haul. Pair your upgrade with Peterbilt 388 toolboxes, Peterbilt 388 filler panels and Peterbilt 388 frame steps. Not only do these components boost your truck's efficiency, but they also enhance its appearance with a polished, professional finish. Whether you're upgrading for convenience, safety, or show-quality style, these Peterbilt 388 deck plates and air line boxes deliver the perfect balance of form and function for life on the open road.