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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.
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  • Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air, One 7-Way & Hydraulic Hookup Cutouts

    Recessed Air Line Box Sectionalized Deck Plate W/ 2 Air, One 7-Way & Hydraulic Hookup Cutouts

    IOWA CUSTOMS

    $490.99 - $655.99
    Organize connectors on the back of your truck with this 18 inch recessed air line box by Iowa Customs with pre-cut openings for trailer air, a 7 way, and a hydraulic hook up. It is made of...
    PPR_300912
    SKU:
    PPR_300912
    Material Options:
    Aluminum
    Finish Options:
    Smooth
    Location:
    Made In USA
    Truck Class:
    Universal
    Product Type:
    Frame & Chassis
    Style Options:
    Recessed
    Type Options:
    Frame Mount
    Material Options:
    Stainless Steel
    Width Options:
    18 Inch
    Type Options:
    Flush Mount
    Make:
    Universal Items
    $490.99 - $655.99
    Qty in Cart: 0
    Price:
    $490.99 - $655.99
    Subtotal:
  • Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way, Hydraulic Hookups

    Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way, Hydraulic Hookups

    IOWA CUSTOMS

    $490.99 - $612.99
    This quality Iowa Customs recessed air line box fits most trucks. It is made of polished stainless steel or smooth aluminum with a radius bottom and a flange. The air line box has pre-cut openings...
    PPR_300911
    SKU:
    PPR_300911
    Material Options:
    Aluminum
    Truck Class:
    Universal
    Finish Options:
    Smooth
    Style Options:
    Flanged
    Finish Options:
    Polished
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Type Options:
    Flush Mount
    Make:
    Universal Items
    $490.99 - $612.99
    Qty in Cart: 0
    Price:
    $490.99 - $612.99
    Subtotal:
  • Merritt 72 X 34.5 Inch Diamond Plate Aluminum Deck Cover W/ Stiffeners

    Merritt 72 X 34.5 Inch Diamond Plate Aluminum Deck Cover W/ Stiffeners

    MERRITT

    $698.99
    72 X 34.5 Inch Diamond Plate Deck Cover By MerrittGive your truck a durable, professional upgrade with the Merritt Diamond Plate Aluminum Deck Cover with Stiffeners. Made from premium aluminum, the...
    159
    SKU:
    159
    Length Options:
    72 Inch
    Width Options:
    34 Inch
    Location:
    Made In USA
    Material Options:
    Aluminum
    Finish Options:
    Diamond Plate
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $698.99
    Qty in Cart: 0
    Price:
    $698.99
    Subtotal:
  • 87 Inch Stainless Steel Wrap Around Deck Plate

    87 Inch Stainless Steel Wrap Around Deck Plate

    ARANDA TRUCK ACCESSORIES

    $659.99
    87 Inch Wrap Around Deck Plate W/ Supports & HardwareDelivering strength, protection, and professional-grade construction, the 87 Inch Stainless Steel Wrap Around Deck Plate is perfect for work-ready...
    09-05030055
    SKU:
    09-05030055
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    Length Options:
    87 Inch
    Size Options:
    16 Gauge
    Make:
    Universal Items
    $659.99
    Qty in Cart: 0
    Price:
    $659.99
    Subtotal:
  • 6 Ft Stainless Steel Over The Frame Deck Plate

    6 Ft Stainless Steel Over The Frame Deck Plate

    IOWA CUSTOMS

    $744.99
    6 Ft Over The Frame Deck PlateAdd both protection and polish to your truck with the 6 Ft Stainless Steel Over The Frame Deck Plate. Made from #8 304 stainless steel, its over-the-frame design ensures...
    09-0503000013
    SKU:
    09-0503000013
    Length Options:
    72 Inch
    Finish Options:
    Polished
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    $744.99
    Qty in Cart: 0
    Price:
    $744.99
    Subtotal:
  • Iowa Customs Aluminum In Frame Slide In Dove Tail Kit For Merritt Dyna Deck

    Iowa Customs Aluminum In Frame Slide In Dove Tail Kit For Merritt Dyna Deck

    IOWA CUSTOMS

    $717.99
    Aluminum In Frame Slide In Dove Tail Kit By Iowa CustomsEquip your Merritt Dyna Deck with the Aluminum In-Frame Slide-In Dove Tail Kit, designed for professional-grade performance. Its slide-in,...
    09-05160036
    SKU:
    09-05160036
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Material Options:
    Aluminum
    Color:
    Black
    Make:
    Universal Items
    Position:
    Kit Full
    Style Options:
    In Frame
    $717.99
    Qty in Cart: 0
    Price:
    $717.99
    Subtotal:
  • Stainless Steel Deck Plate Cover- Treaded

    Stainless Steel Deck Plate Cover- Treaded

    ROADWORKS

    $259.99
    Stainless Steel Deck Plate Cover Without Cutouts* High Quality Deck Plate* Treaded* No Cutouts* Use With Double Sided Airline Boxes* Mounting Brackets Included* Stainless Steel* 12 Inch* Sold...
    09-05030074
    SKU:
    09-05030074
    Length Options:
    12 Inch
    Material Options:
    Stainless Steel
    Type Options:
    Standard Mount
    Product Type:
    Frame & Chassis
    Size Options:
    18 Gauge
    Make:
    Universal Items
    $259.99
    Qty in Cart: 0
    Price:
    $259.99
    Subtotal:
  • Stainless Steel Air Line Box With Holes For 2 Air Lines, 7-Way & 6 Round 2 Inch Red/ Clear Flat Lights

    Stainless Steel Air Line Box With Holes For 2 Air Lines, 7-Way & 6 Round 2 Inch Red/ Clear Flat Lights

    ROADWORKS

    $682.99
    Air Line Box With Holes For 2 Air Lines, 7-Way & 6 Round 2 Inch Red/ Clear Flat Lights* High Quality Air Line Box* Single Connector* Includes:  - (1) 7-Way Hole  - (2) Air Line Holes  - (6) Round 2...
    09-050400029
    SKU:
    09-050400029
    Size Options:
    14 Gauge
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Color:
    Red/Clear
    Light Options:
    With Lights
    Location:
    Made In USA
    $682.99
    Qty in Cart: 0
    Price:
    $682.99
    Subtotal:
  • 48 X 34 X 1.25 Inch Diamond Plate Aluminum Deck Plate Cover

    48 X 34 X 1.25 Inch Diamond Plate Aluminum Deck Plate Cover

    PRO-TECH INDUSTRIES

    $488.99
    Blind Mount Diamond Plate Aluminum Deck Plate Cover* High Quality Deck Cover* Mounting Kit Included* 0.105 Diamond Plate Aluminum* 1-1/4 Inch Height* 34 Inch Width* 48 Inch Length* Blind Mount* Sold...
    09-05030016
    SKU:
    09-05030016
    Product Type:
    Frame & Chassis
    Material Options:
    Aluminum
    Finish Options:
    Diamond Plate
    Position:
    Kit Full
    Height Options:
    1 1/4 Inch
    Type Options:
    Blind Mount
    Length Options:
    48 Inch
    Width Options:
    34 Inch
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $488.99
    Qty in Cart: 0
    Price:
    $488.99
    Subtotal:
  • Double Connector Air Line Boxes

    Double Connector Air Line Boxes

    ROADWORKS

    $515.99 - $850.99
    Choose Option(s) to see description.Double Connection Air Line Box With 6 Rnd Flat Red LEDs With Hooded BezelsAir Line Box With Double Trailer Harness Connector Holes* High Quality Air Line Box*...
    PPR_365920
    SKU:
    PPR_365920
    Color:
    Red
    Color:
    Blue
    Light Options:
    Without Lights
    Light Options:
    With Lights
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Universal Items
    $515.99 - $850.99
    Qty in Cart: 0
    Price:
    $515.99 - $850.99
    Subtotal:
  • Stainless Steel Double Connection Air Line Box

    Stainless Steel Double Connection Air Line Box

    ROADWORKS

    $492.99
    Air Line Box With Double Trailer Harness Connector Holes* High Quality Air Line Box* Stainless Steel* (2) Trailer Connector Holes* Mounting Brackets Included* Clamps To Frame Rail* Can Be Bolted To...
    09-05040165
    SKU:
    09-05040165
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Universal Items
    $492.99
    Qty in Cart: 0
    Price:
    $492.99
    Subtotal:
  • Single Connection Air Line Box With 1 -7 Way, 2 Air Lines, 2 Rnd 4 Inch Back-Up Lights, 6 Rnd 2 Inch Red/Clear LEDs

    Single Connection Air Line Box With 1 -7 Way, 2 Air Lines, 2 Rnd 4 Inch Back-Up Lights, 6 Rnd 2 Inch Red/Clear LEDs

    ROADWORKS

    $695.99
    Air Line Box Single Connection With Light Holes* High Quality Air Line Box* Single Connection* 7 Way Wire* 2 Air Lines* (2) Round 4 Inch Back-Up Lights On Line Connector Face* (6) Round 2 Inch Lights...
    09-0504319
    SKU:
    09-0504319
    Product Type:
    Frame & Chassis
    Color:
    Red
    Light Options:
    With Lights
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Make:
    Universal Items
    $695.99
    Qty in Cart: 0
    Price:
    $695.99
    Subtotal:
  • Single Connector Air Line Boxes

    Single Connector Air Line Boxes

    ROADWORKS

    $395.99 - $759.99
    Hide your unsightly trailer harness connectors with one of these polished stainless steel air line boxes. Each features pre-drilled holes for a single connection hook up. Choose the light options...
    PPR_299261
    SKU:
    PPR_299261
    Product Type:
    Frame & Chassis
    Light Options:
    With Lights
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Color:
    Blue
    Color:
    Red
    Light Options:
    Without Lights
    $395.99 - $759.99
    Qty in Cart: 0
    Price:
    $395.99 - $759.99
    Subtotal:
  • Herd Deck Plate 33 X 18 Inch Black

    Herd Deck Plate 33 X 18 Inch Black

    HERD BUMPERS

    $247.99
    33 X 18 Inch Deck Plate With Black Coating By Herd* High Quality Deck Plate* Black Coating* Dimensions:  - 33 Inch   - 18 Inch Depth* Aluminum Treads* No Drilling Required* Made In USA* Sold...
    09-0503122
    SKU:
    09-0503122
    Color:
    Black
    Height Options:
    18 Inch
    Width Options:
    33 Inch
    Make:
    Universal Items
    $247.99
    Qty in Cart: 0
    Price:
    $247.99
    Subtotal:
  • Herd Deck Plate 33 X 12 Inch Black

    Herd Deck Plate 33 X 12 Inch Black

    HERD BUMPERS

    $226.99
    33 X 12 Inch Deck Plate With Black Coating By Herd* High Quality Deck Plate* Black Coating* Dimensions:  - 33 Inch   - 12 Inch Depth* Aluminum Treads* No Drilling Required* Made In USA* Sold...
    09-0503121
    SKU:
    09-0503121
    Color:
    Black
    Width Options:
    33 Inch
    Height Options:
    12 Inch
    Make:
    Universal Items
    $226.99
    Qty in Cart: 0
    Price:
    $226.99
    Subtotal:
  • 89 Inch Aluminum Deck Plate With Top Airline Box - Single Electric Dual Air & 2 4 Inch Light Holes

    89 Inch Aluminum Deck Plate With Top Airline Box - Single Electric Dual Air & 2 4 Inch Light Holes

    IOWA CUSTOMS

    $1,524.99
    89 Inch Aluminum Deck Plate With Top Airline Box - Single Electric Dual Air & 2 4 Inch Light Holes* High Quality Deck Plate* Aluminum* With Top Airline Box * Installed 10 Inches From Front Of...
    09-05891000
    SKU:
    09-05891000
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Universal Items
    Length Options:
    89 Inch
    Light Options:
    Without Lights
    $1,524.99
    Qty in Cart: 0
    Price:
    $1,524.99
    Subtotal:
  • 14 Ft SS 2 Piece Deck Plate With Built In Airline Box With 2 Electric Plugs And 2 Air Line Holes

    14 Ft SS 2 Piece Deck Plate With Built In Airline Box With 2 Electric Plugs And 2 Air Line Holes

    IOWA CUSTOMS

    $2,753.99
    14 Ft SS 2 Piece Deck Plate With Built In Airline Box With 2 Electric Plugs And 2 Air Line Holes* High Quality Deck Plate* Stainless Steel* 14 Foot* With Built In Airline Box * (2) Electric Plugs And...
    09-05143000
    SKU:
    09-05143000
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Length Options:
    14 Feet
    $2,753.99
    Qty in Cart: 0
    Price:
    $2,753.99
    Subtotal:
  • 72 X 26.875 Inch Smooth Aluminum In Frame Deck Plate

    72 X 26.875 Inch Smooth Aluminum In Frame Deck Plate

    IOWA CUSTOMS

    $606.99
    72 X 26.875 Inch Smooth Aluminum In Frame Deck Plate* High Quality Deck Plate* Smooth Aluminum* Dimensions:  - 72 Inch  - 26.875 Inch Wide* Sold Individually* Warranty On Deck Plates Against Defects...
    09-050372100
    SKU:
    09-050372100
    Product Type:
    Frame & Chassis
    Material Options:
    Aluminum
    Truck Class:
    Heavy Duty
    Length Options:
    72 Inch
    Make:
    Universal Items
    Width Options:
    27 Inch
    $606.99
    Qty in Cart: 0
    Price:
    $606.99
    Subtotal:
  • Stainless Steel Deck Plate Flush Mount With Airline Box, Standard Storage Box

    Stainless Steel Deck Plate Flush Mount With Airline Box, Standard Storage Box

    IOWA CUSTOMS

    $3,853.99
    Stainless Steel Deck Plate Flush Mount With Airline Box, Standard Storage Box* High Quality Deck Plate* Stainless Steel* Flush Mount* With Airline Box Standard Storage Box* Made In USA* Sold...
    09-05040148
    SKU:
    09-05040148
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Location:
    Made In USA
    Style Options:
    Flush Mount
    $3,853.99
    Qty in Cart: 0
    Price:
    $3,853.99
    Subtotal:
  • SS Deck Plate Full Length With Recessed Air Line Box & Storage Box

    SS Deck Plate Full Length With Recessed Air Line Box & Storage Box

    IOWA CUSTOMS

    $2,970.99
    Stainless Steel Deck Plate Full Length With Recessed Air Line Box & Storage Box* High Quality Deck Plate* Stainless Steel* With Recessed Air Line Box* 14 Inch X 22 Inch Storage Box (Included)* Sold...
    09-05031203000
    SKU:
    09-05031203000
    Material Options:
    Stainless Steel
    Length Options:
    14 Inch
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $2,970.99
    Qty in Cart: 0
    Price:
    $2,970.99
    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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