Peterbilt 589 Deck Plates & Air Line Boxes

Frequently Asked Questions About Peterbilt 589 Deck Plates & Air Line Boxes

What are deck plates and air line boxes used for on the Peterbilt 589?

Deck plates and air line boxes are components mounted behind the cab on the truck's frame deck. Deck plates provide a durable covering for the frame area, protecting it from road debris and weather while giving the truck a finished appearance. Air line boxes house and organize the air and electrical lines that run between the tractor and trailer, keeping them protected from damage and easy to access for maintenance or hookup.

Will these deck plates and air line boxes fit my Peterbilt 589 without modification?

Products in this category are designed to fit the Peterbilt 589 chassis. However, exact fitment can vary slightly depending on your truck's specific configuration, such as frame width, fuel tank setup, or aftermarket modifications already in place. We recommend checking the listed specifications on each product page and comparing them to your truck's measurements, or contacting our team before ordering if you are unsure.

What materials are these deck plates and air line boxes made from, and what finish options are available?

Most deck plates and air line boxes are constructed from aluminum or stainless steel for durability and corrosion resistance. Finish options typically include diamond plate, smooth, or polished stainless steel, allowing you to match the look of your existing chassis components or achieve the appearance you want for your build.

Can I install a deck plate or air line box myself, or do I need a professional?

Many owner-operators and shop technicians install these parts themselves, as the process generally involves bolting or mounting the component to existing frame holes or brackets. That said, installation difficulty can depend on whether pre-drilled mounting points line up with your truck, and whether any air lines or electrical connections need to be rerouted. If you are not comfortable with drilling, fabrication, or working around air and electrical lines, having a professional install it is a good option.

How do I clean and maintain aluminum or stainless deck plates and air line boxes?

Regular washing with mild soap and water helps prevent buildup of road salt, brake dust, and grime that can dull the finish over time. For polished or diamond plate aluminum, using a dedicated metal polish periodically will help maintain shine and reduce oxidation. Stainless steel is more resistant to corrosion but still benefits from routine cleaning, especially in winter months when road salt exposure is higher.