Upgrade your Peterbilt 330, 335, or 337 with durable deck plates and air line boxes built for everyday performance and a clean, professional finish. These aftermarket accessories improve traction, protect your hookups, and give your truck a sharp, organized look that stands out on the road. Choose from rugged aluminum or stainless steel deck plates available in a range of sizes and configurations. Aluminum offers a lightweight, paintable surface, while stainless steel delivers a polished shine and superior corrosion resistance. Pick your preferred diamond tread for added grip or smooth finish for a sleek, refined appearance. The air line boxes are designed for both function and style. Go with a flush-mount or in-frame design for a seamless look, or opt for an integrated air line box to simplify trailer air and electrical hookups. Many options feature sectional layouts for easier customization and fitment. Trusted brands like Merritt and Brunner ensure quality and long-lasting durability mile after mile. Pair your upgrade with Peterbilt 330/335/337 toolboxes, Peterbilt 330/335/337 filler panels and Peterbilt 330/335/337 frame steps. Installing deck plates improves safety by providing secure footing and reducing the risk of slips or falls. Adding air line boxes not only keeps your connections protected and organized but also helps prevent air leaks and enhances the overall look of your rig.