Give your Peterbilt 389 a clean, professional upgrade with durable deck plates and air line boxes built for both strength and style. These aftermarket components make it easier to organize your hookups, protect your frame, and add a polished finish that stands out on the road. Choose from stainless steel, aluminum, or diamond tread deck plates in a variety of sizes and finishes. Aluminum provides a lightweight, paintable surface, while stainless steel delivers a bright, mirror-polished look that resists corrosion. The diamond tread finish adds traction and toughness, ideal for everyday use and maintenance access. The air line boxes are designed for convenience and function, featuring recessed, top-mounted, and flush configurations with hookups for trailer air, electrical, and hydraulic lines. They integrate seamlessly with your deck plate setup to keep connections protected and easy to reach. You'll also find filler sections, step plates, and billet aluminum accessories to complete your build-perfect for improving safety, grip, and overall appearance. Pair your upgrade with Peterbilt 389 toolboxes, Peterbilt 389 filler panels and Peterbilt 389 frame steps. Whether you're upgrading your current setup or outfitting a new rig, these Peterbilt 389 deck plates and air line boxes combine durability, customization, and style-giving your truck a professional finish that's built to last.