Kenworth Cabover Deck Plates & Air Line Boxes

Frequently Asked Questions About Kenworth Cabover Deck Plates & Air Line Boxes

What are deck plates and air line boxes used for on a Kenworth cabover?

Deck plates are the flat, often diamond-plated panels that sit behind the cab on a cabover Kenworth, providing a durable work surface and a mounting point for air lines, electrical lines, and other components that run between the cab and trailer. Air line boxes are enclosures mounted to or near the deck plate that organize and protect the air and electrical lines, keeping them secure and out of the way while still accessible for connections and maintenance.

Will a deck plate or air line box fit my specific Kenworth cabover model?

Fitment can vary between Kenworth cabover models such as the K100 and T600 series, as well as by production year, so it is important to check the listed specifications and measurements against your truck before ordering. If you are unsure about compatibility, having your VIN or model year on hand and reaching out to our parts specialists can help confirm the correct part before purchase.

What materials and finishes are available for these parts?

Most deck plates and air line boxes are constructed from aluminum or steel, with aluminum being a popular choice for its lighter weight and natural resistance to rust. Finish options typically include raw or mill finish, diamond plate tread patterns for slip resistance, and polished or painted finishes depending on the specific product, so check each listing for the exact material and finish details.

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

Installation generally involves removing the worn or damaged component and bolting or welding the new one into place, depending on how the original was mounted on your truck. Basic hand tools are usually sufficient for bolt-on applications, but if welding is required or your setup is customized, having a qualified technician handle the install is recommended to ensure a secure, properly aligned fit.

Why would I need to replace my deck plate or air line box in the first place?

Over time, deck plates can suffer from corrosion, cracking, or wear from constant foot traffic and exposure to road debris, while air line boxes may crack, loosen, or fail to properly protect the lines they house due to age, vibration, or impact damage. Replacing these components helps maintain a safe work surface behind the cab and keeps critical air and electrical lines properly supported and protected from the elements.