Peterbilt 367 Deck Plates & Air Line Boxes

Frequently Asked Questions About Peterbilt 367 Deck Plates & Air Line Boxes

What are deck plates and air line boxes used for on a Peterbilt 367?

Deck plates are the flat, checkered or smooth panels that sit behind the cab on the frame rails, providing a walkable surface and a mounting platform for air lines, electrical lines, and other components that run between the tractor and trailer. Air line boxes are the housings mounted on or near the deck plate that organize and protect the glad hand fittings and electrical connectors, keeping them accessible while shielding them from road debris and weather.

Will these deck plates and air line boxes fit my specific Peterbilt 367?

Most products in this category are designed to match the factory dimensions and mounting points used on the Peterbilt 367, but frame width, air line routing, and box configurations can vary depending on the model year and how the truck was originally spec'd. Always compare the measurements and mounting hole patterns listed in the product description against your truck before ordering, and reach out to our team if you are unsure.

What materials and finishes are available for deck plates and air line boxes?

These parts are commonly available in aluminum and stainless steel. Aluminum options are lighter and often more budget-friendly, while stainless steel offers added durability and a polished look that resists corrosion over time. Finish choices typically include diamond plate, smooth, or brushed textures, so you can match the appearance of the rest of your truck's exterior components.

How difficult is it to install a replacement deck plate or air line box?

Installation difficulty depends on the specific part and whether it is a direct bolt-on replacement or requires modification to existing brackets and air lines. Many deck plates bolt directly to the frame using the original mounting holes, while air line boxes may require disconnecting and rerouting air and electrical lines before remounting. Basic hand tools are usually sufficient, but if your setup has been customized from factory, additional fitting work may be needed.

How do I know when it's time to replace my deck plate or air line box?

Common signs include visible rust or corrosion eating through the metal, cracked or bent mounting points, loose or missing hardware, and air line boxes that no longer close or protect the fittings properly. Since these components are exposed to road salt, debris, and constant vibration, periodic inspection can help you catch wear before it leads to a bigger issue like a damaged air line or electrical connection.