Peterbilt 359 Frame Steps & Accessories: Upgrade your Peterbilt 359 with top-quality frame steps, plates, and inserts. Choose from stainless steel, aluminum, and powder-coated options to enhance your truck?s look, safety, and functionality. From polished step plates to retractable and folding steps, this lineup has everything you need for easy cab access and a personalized style. Durable, stylish, and built to last, these accessories are perfect for giving your rig a functional and visual boost.