Freightliner Cascadia 116/126 Deck Plates-Air Box

Frequently Asked Questions About Freightliner Cascadia 116/126 Deck Plates-Air Box

What is a deck plate air box used for on a Cascadia?

The deck plate air box is the component located on the catwalk/deck area behind the cab that houses the air lines and electrical connections running between the tractor and trailer. It provides a mounting point for the glad hands and electrical receptacle while protecting the lines from road debris, weather, and wear.

Will this deck plate air box fit both the 116 and 126 Cascadia models?

Most deck plate air boxes listed in this category are designed to fit both the 116 and 126 Cascadia platforms since the deck/catwalk mounting area is shared across these models. However, always check the specific product listing for year range and any noted fitment exceptions before ordering, as Freightliner has made minor design changes over different production years.

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

These parts are typically constructed from durable steel or aluminum, chosen for resistance to corrosion and daily wear from road exposure. Finish options commonly include plain, painted, or polished/diamond plate depending on the specific product, so check individual listings for the exact finish and material specs.

Does the air box come pre-drilled with mounting holes, or will I need to drill my own?

Many replacement deck plate air boxes come pre-drilled to match factory mounting locations for a more straightforward installation. That said, some aftermarket or universal-fit options may require drilling or minor modification to align with your specific truck setup. Review the product description or reach out to our team if fitment details are unclear.

Can I install a replacement deck plate air box myself, or does it require a professional?

Installation is generally a bolt-on or weld-on job depending on the specific part, and many truck owners with basic mechanical skills and tools handle it themselves. If the part requires welding or if your existing mounting points are damaged or rusted through, it may be worth having a qualified shop complete the installation to ensure proper fit and secure attachment of your air and electrical lines.