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International LT Deck Plates & Air Line Boxes

Find top-notch International LT Deck Plates & Air Line Boxes at 4 State Trucks. From CSM stainless steel boxes to Merritt aluminum deck plates, our selection has what you need. Upgrade your rig with durable, stylish products at great prices. Discover the perfect fit for your truck and enhance both performance and looks with our quality options. Visit us today.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Smooth Aluminum 18 Inch Sectional Deck Plate Filler With Recessed Mini Airline Box & One 7-Way Hookup

    Smooth Aluminum 18 Inch Sectional Deck Plate Filler With Recessed Mini Airline Box & One 7-Way Hookup

    IOWA CUSTOMS

    $490.99
    18 Inch Smooth Aluminum Sectionalized Deck Plate W/ 1 Mini Air Line Box, One 7-Way HookupsOrganize connectors on the back of your truck with this 18 inch recessed air line box by Iowa Customs with...
    09-050300028
    SKU:
    09-050300028
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Flush Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $490.99
    Qty in Cart: 0
    Price:
    $490.99
    Subtotal:
  • 304 SS 18 Inch Recessed Small Air Line Box Sectionalized Deck Plate W/ 2 Air & 7-Way Cutout

    304 SS 18 Inch Recessed Small Air Line Box Sectionalized Deck Plate W/ 2 Air & 7-Way Cutout

    IOWA CUSTOMS

    $655.99
    18 Inch 304 Stainless Steel Recessed Small Air Line Box Sectionalized Deck Plate W/ 2 Air & 7-Way CutoutOrganize connectors on the back of your truck with this 18 inch recessed small air line box by...
    09-050300027
    SKU:
    09-050300027
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Flush Mount
    Product Type:
    Frame & Chassis
    $655.99
    Qty in Cart: 0
    Price:
    $655.99
    Subtotal:
  • 304 SS 18 Inch Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air & 7-Way Cutout

    304 SS 18 Inch Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air & 7-Way Cutout

    IOWA CUSTOMS

    $655.99
    18 Inch 304 Stainless Steel Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air & 7-Way CutoutOrganize connectors on the back of your truck with this 18 inch recessed air line box by Iowa Customs...
    09-050300026
    SKU:
    09-050300026
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Flush Mount
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $655.99
    Qty in Cart: 0
    Price:
    $655.99
    Subtotal:
  • Aluminum 12 Inch Deck Plate Section W/ On Top Airline Box For 34 Inch Truck Frame

    Aluminum 12 Inch Deck Plate Section W/ On Top Airline Box For 34 Inch Truck Frame

    IOWA CUSTOMS

    $572.99
    Smooth Aluminum On Frame Sectionalized Deck Plate With On-Top Air BoxThis Iowa Customs 12 Inch On Frame Section Deck Plate makes adding an on-top airline box to your deck easy. Mix and match it with...
    09-050300025
    SKU:
    09-050300025
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Style Options:
    Surface Mount
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Length Options:
    34 Inch
    $572.99
    Qty in Cart: 0
    Price:
    $572.99
    Subtotal:
  • 304 Stainless Steel 12 Inch On-Top Air Line Box

    304 Stainless Steel 12 Inch On-Top Air Line Box

    IOWA CUSTOMS

    $696.99
    12 Inch 304 Stainless Steel On-Top Air Line BoxHide unsightly connectors on the back of your truck with this 12 inch on-top air line box by Iowa Customs. It is made of corrosion-resistant stainless...
    09-050300024
    SKU:
    09-050300024
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    Flush Mount
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    $696.99
    Qty in Cart: 0
    Price:
    $696.99
    Subtotal:
  • 304 Stainless Steel 24 Inch Deck Plate Filler Section

    304 Stainless Steel 24 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $466.99
    24 Inch 304 Stainless Steel Deck Plate Filler SectionDress up your truck with this stainless steel 24-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate filler...
    09-050300023
    SKU:
    09-050300023
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    Surface Mount
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    $466.99
    Qty in Cart: 0
    Price:
    $466.99
    Subtotal:
  • Smooth Aluminum 22 Inch Deck Plate Filler Section

    Smooth Aluminum 22 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $294.99
    22 Inch Smooth Aluminum Deck Plate Filler SectionDress up your truck with this lightweight smooth aluminum 22-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate...
    09-050300022
    SKU:
    09-050300022
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Surface Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $294.99
    Qty in Cart: 0
    Price:
    $294.99
    Subtotal:
  • 304 Stainless Steel 22 Inch Deck Plate Filler Section

    304 Stainless Steel 22 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $453.99
    22 Inch 304 Stainless Steel Deck Plate Filler SectionDress up your truck with this stainless steel 22-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate filler...
    09-050300021
    SKU:
    09-050300021
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Surface Mount
    Product Type:
    Frame & Chassis
    $453.99
    Qty in Cart: 0
    Price:
    $453.99
    Subtotal:
  • Smooth Aluminum 24 Inch Deck Plate Filler Section

    Smooth Aluminum 24 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $310.99
    24 Inch Smooth Aluminum Deck Plate Filler SectionDress up your truck with this lightweight smooth aluminum 24-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate...
    09-050300020
    SKU:
    09-050300020
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Style Options:
    Surface Mount
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    $310.99
    Qty in Cart: 0
    Price:
    $310.99
    Subtotal:
  • 304 Stainless Steel 20 Inch Deck Plate Filler Section

    304 Stainless Steel 20 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $436.99
    20 Inch 304 Stainless Steel Deck Plate Filler SectionDress up your truck with this stainless steel 20-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate filler...
    09-050300019
    SKU:
    09-050300019
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    Surface Mount
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    $436.99
    Qty in Cart: 0
    Price:
    $436.99
    Subtotal:
  • Smooth Aluminum 18 Inch Deck Plate Filler Section

    Smooth Aluminum 18 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $265.99
    18 Inch Smooth Aluminum Deck Plate Filler SectionDress up your truck with this lightweight smooth aluminum 18-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate...
    09-050300018
    SKU:
    09-050300018
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Surface Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $265.99
    Qty in Cart: 0
    Price:
    $265.99
    Subtotal:
  • 304 Stainless Steel 18 Inch Deck Plate Filler Section

    304 Stainless Steel 18 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $405.99
    18 Inch 304 Stainless Steel Deck Plate Filler SectionDress up your truck with this lightweight smooth stainless steel 14-inch plate filler. Part of Iowa Customs patented sectional deck place system,...
    09-050300017
    SKU:
    09-050300017
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Surface Mount
    Product Type:
    Frame & Chassis
    $405.99
    Qty in Cart: 0
    Price:
    $405.99
    Subtotal:
  • Smooth Aluminum 16 Inch Deck Plate Filler Section

    Smooth Aluminum 16 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $204.99
    16 Inch Smooth Aluminum Deck Plate Filler SectionDress up your truck with this lightweight smooth aluminum 16-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate...
    09-050300016
    SKU:
    09-050300016
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Finish Options:
    Smooth
    Style Options:
    Surface Mount
    Product Type:
    Frame & Chassis
    $204.99
    Qty in Cart: 0
    Price:
    $204.99
    Subtotal:
  • 304 Stainless Steel 16 Inch Deck Plate Filler Section

    304 Stainless Steel 16 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $311.99
    16 Inch 304 Stainless Steel Deck Plate Filler SectionDress up your truck with this stainless steel 16-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate filler...
    09-050300015
    SKU:
    09-050300015
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    Surface Mount
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    $311.99
    Qty in Cart: 0
    Price:
    $311.99
    Subtotal:
  • Smooth Aluminum 14 Inch Deck Plate Filler Section

    Smooth Aluminum 14 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $178.99
    14 Inch Smooth Aluminum Deck Plate Filler SectionDress up your truck with this lightweight smooth aluminum 14-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate...
    09-050300014
    SKU:
    09-050300014
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Surface Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $178.99
    Qty in Cart: 0
    Price:
    $178.99
    Subtotal:
  • 304 Stainless Steel 14 Inch Deck Plate Filler Section

    304 Stainless Steel 14 Inch Deck Plate Filler Section

    IOWA CUSTOMS

    $276.99
    14 Inch 304 Stainless Steel Deck Plate Filler SectionDress up your truck with this stainless steel 14-inch plate filler. Part of Iowa Customs patented sectional deck place system, this plate filler...
    09-050300013
    SKU:
    09-050300013
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Surface Mount
    Product Type:
    Frame & Chassis
    $276.99
    Qty in Cart: 0
    Price:
    $276.99
    Subtotal:
  • Rails For Merritt 443 Deck Plate Flush Mount

    Rails For Merritt 443 Deck Plate Flush Mount

    MERRITT

    $38.46
    Merritt 443 Deck Plate Rails* High Quality Rails* For Flush Mount Merritt Deck Plate 443* Sold Individually* Warranty On Rails Against Defects In Workmanship & Material From Date Of Purchase*** High...
    09-050300010
    SKU:
    09-050300010
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $38.46
    Qty in Cart: 0
    Price:
    $38.46
    Subtotal:
  • Iowa Customs Aluminum 14 X 22 Inch Slide-In Rail Recessed Storage Box Deck Plate

    Iowa Customs Aluminum 14 X 22 Inch Slide-In Rail Recessed Storage Box Deck Plate

    IOWA CUSTOMS

    $961.99
    Deck Plate Recessed Storage Box W/ Slide In Rail 14 X 22 Inch By Iowa CustomsUpgrade your truck with Iowa Customs' Recessed Storage Box! This sleek aluminum accessory fits seamlessly into an existing...
    09-0503000010
    SKU:
    09-0503000010
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Length Options:
    22 Inch
    Type Options:
    Flush Mount
    Width Options:
    14 Inch
    Style Options:
    Recessed
    $961.99
    Qty in Cart: 0
    Price:
    $961.99
    Subtotal:
  • 304 Stainless Steel Liberty Vehicle Flag Pole System With CNC Billet Aluminum Components, American Flag

    304 Stainless Steel Liberty Vehicle Flag Pole System With CNC Billet Aluminum Components, American Flag

    REALWHEELS

    $509.99
    Vehicle Flag Pole System* High Quality Flag Pole* Stainless Steel* American Flag* Top Ball* Mount Included* Sold As Kit* Warranty On Flag Pole Against Defects In Workmanship & Material From Date Of...
    09-020200005
    SKU:
    09-020200005
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $509.99
    Qty in Cart: 0
    Price:
    $509.99
    Subtotal:
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Adding your products to cart

These aftermarket upgrades add both style and function, helping you stay organized while protecting vital air and electrical connections. Choose from aluminum or stainless steel deck plates to match your setup. Aluminum gives you a lightweight, paintable option, while stainless steel delivers a polished, corrosion-resistant shine. Deck plates come in smooth or diamond tread finishes and a range of sizes, making it easy to create a seamless fit along your truck's frame. The air line boxes feature recessed, flush-mount, or top-mounted styles for flexibility and easy access. You'll also find modular deck plate systems and customizable step plates, perfect for improving traction and building a layout that fits your specific needs. Built to handle heavy-duty use while keeping your rig looking sharp, these International LT deck plates and air line boxes combine practicality, protection, and style for a setup that's ready for the road.

Frequently Asked Questions About International LT Deck Plates & Air Line Boxes

What is the purpose of a deck plate and air line box on an International LT?

The deck plate is the flat panel located behind the cab that provides a mounting surface for air lines, electrical connections, and the fifth wheel area, while the air line box houses and protects the glad hand connections and electrical plugs that link the tractor to the trailer. Together they keep these critical connections organized, accessible, and shielded from road debris and weather.

Will this deck plate or air line box fit my specific International LT model and year?

Fitment can vary depending on the model year and cab configuration of your International LT, so it is important to check the listed specifications and part numbers against your truck before purchasing. If you are unsure, comparing your existing part's dimensions and mounting pattern to the product listing, or contacting our support team with your VIN or model details, will help confirm a proper fit.

What materials are these deck plates and air line boxes made from, and how well do they hold up?

Most deck plates and air line boxes are constructed from aluminum or steel, chosen for their balance of durability and resistance to corrosion from road salt, moisture, and general wear. Aluminum options tend to resist rust better over time, while steel components may offer added rigidity, so the right choice often depends on your climate and how the truck is used.

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

Installation typically involves removing the old unit, transferring or reconnecting air lines and electrical wiring, and securing the new part with the existing mounting hardware. Basic hand tools are usually sufficient, but because these components involve air and electrical connections, it helps to have some mechanical experience or to have a qualified technician handle the installation to ensure everything is properly sealed and connected.

Can I get a deck plate or air line box in a specific finish to match my truck?

Many of these parts are available in raw, painted, or polished finishes depending on the manufacturer and specific product. If matching the look of your cab or achieving a certain level of corrosion resistance matters to you, check the product description for available finish options before ordering.


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