Sterling Acterra Deck Plate-Air Box

Frequently Asked Questions About Sterling Acterra Deck Plate-Air Box

What is a deck plate air box used for on a Sterling Acterra?

The deck plate air box is the component mounted on the frame deck behind the cab that houses the air line connections and electrical glad hands used to hook up a trailer. It keeps the air and electrical lines organized, protected, and easily accessible when coupling and uncoupling trailers.

Will this deck plate air box fit my specific Sterling Acterra model year?

Deck plate and air box designs can vary by model year and factory configuration, including the number and placement of glad hand ports and mounting hole patterns. Before ordering, compare your existing unit's dimensions, port count, and mounting layout to the product listing, or contact our parts team with your VIN or model year to confirm fitment.

What materials are these deck plates and air boxes made from, and are there finish options?

Most deck plates and air boxes are constructed from steel or aluminum for durability under constant exposure to road debris, moisture, and vibration. Depending on the listing, you may find options in raw steel, painted, or aluminum finishes. Aluminum options tend to resist corrosion better, while steel options are often more budget friendly.

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

Many customers replace these units themselves since installation typically involves unbolting the old plate from the frame deck, disconnecting the air and electrical lines, and mounting the new unit in the same location. Basic hand tools are usually sufficient. If your lines need rerouting or the mounting holes do not line up with your frame, a professional installer can help ensure a secure and leak free fit.

How do I know if my current deck plate or air box needs to be replaced?

Common signs include cracked or rusted mounting plates, loose or wobbly glad hand fittings, air leaks around the connections, or physical damage from road debris or impact. If the plate no longer holds the glad hands securely or shows visible corrosion that compromises strength, it is time to replace it to avoid air line failures on the road.