Peterbilt 567/579 Deck Plates & Air Line Boxes

Frequently Asked Questions About Peterbilt 567/579 Deck Plates & Air Line Boxes

What are deck plates and air line boxes used for on my Peterbilt 567/579?

Deck plates are the flat panels mounted behind the cab that cover the frame rails and back-of-cab area, giving your truck a clean, finished look while protecting the frame and wiring from road debris. Air line boxes house and organize the air lines and electrical connections that run to the trailer, keeping them protected, secure, and easy to access for hookups and maintenance.

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

Products in this category are built specifically for the Peterbilt 567 and 579 models, but fitment can still vary based on cab configuration, frame width, and whether your truck has factory or aftermarket air line routing. Always check the listed specifications and, if you're unsure, compare measurements against your current setup or reach out to our team with your VIN or truck details before ordering.

What materials and finish options are available?

Deck plates and air line boxes are commonly available in stainless steel, aluminum, and diamond plate finishes. Stainless steel offers durability and corrosion resistance, aluminum provides a lighter-weight option, and diamond plate adds extra grip and a rugged aesthetic. The right choice depends on your priorities for appearance, weight, and long-term durability in your operating environment.

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

Most deck plates and air line boxes are designed as direct bolt-on replacements using existing mounting points, so installation typically doesn't require major modifications. That said, you may need to disconnect and reroute air lines or electrical connections temporarily, so having basic hand tools and some mechanical familiarity will make the job go smoothly. If you're replacing a damaged factory unit, take note of how the original was mounted before removal.

How do I keep my deck plate and air line box looking good and functioning properly over time?

Regular cleaning helps prevent buildup of road salt, grime, and moisture that can lead to corrosion, especially around seams and mounting points. Periodically check that air lines and electrical connections inside the box are seated properly and free of chafing or wear. For polished or diamond plate finishes, a routine wipe-down with a metal-safe cleaner will help maintain the appearance and extend the life of the part.