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Freightliner Classic Frame & Chassis

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Smooth Aluminum Air Line Box W/ 45 Degree Front, Flange, Trailer Air, 7-Way Hook-Up

    Smooth Aluminum Air Line Box W/ 45 Degree Front, Flange, Trailer Air, 7-Way Hook-Up

    IOWA CUSTOMS

    $503.99
    Smooth Aluminum Custom Air Line Box W/ Trailer, Air & 1 7-Way Hookup* High Quality Airline Box* Smooth Aluminum * 45 Degree Front * With Flange * Trailer Air And One 7 Way Hook Up* Sold Individually*...
    09-0504102
    SKU:
    09-0504102
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Style Options:
    Surface Mount
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    $503.99
    Qty in Cart: 0
    Price:
    $503.99
    Subtotal:
  • Smooth Aluminum Recessed Air Line Box W/ Flange - Hydraulic, Trailer Air, 7 Way Hookups

    Smooth Aluminum Recessed Air Line Box W/ Flange - Hydraulic, Trailer Air, 7 Way Hookups

    IOWA CUSTOMS

    $587.99
    Smooth Aluminum Recessed Air Line Box W/ FlangeThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight aluminum with a radius bottom and a flange. The air line box...
    09-050400017
    SKU:
    09-050400017
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    Type Options:
    Flush Mount
    Style Options:
    Flanged
    $587.99
    Qty in Cart: 0
    Price:
    $587.99
    Subtotal:
  • Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    IOWA CUSTOMS

    $530.99
    Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way & 4/6-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight aluminum...
    09-050400013
    SKU:
    09-050400013
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Flush Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $530.99
    Qty in Cart: 0
    Price:
    $530.99
    Subtotal:
  • Stainless Steel Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    Stainless Steel Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    IOWA CUSTOMS

    $595.99
    Stainless Steel Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way & 4/6-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of polished stainless...
    09-050400012
    SKU:
    09-050400012
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Style Options:
    Flush Mount
    Product Type:
    Frame & Chassis
    $595.99
    Qty in Cart: 0
    Price:
    $595.99
    Subtotal:
  • Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 2 7-Way Hookups

    Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 2 7-Way Hookups

    IOWA CUSTOMS

    $490.99
    Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air & 2 7-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight aluminum with a...
    09-050400011
    SKU:
    09-050400011
    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:
  • Stainless Steel Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 2 7-Way Hookups

    Stainless Steel Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 2 7-Way Hookups

    IOWA CUSTOMS

    $594.99
    Stainless Steel Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air & 2 7-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of polished stainless steel...
    09-050400010
    SKU:
    09-050400010
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Flush Mount
    Finish Options:
    Polished
    Product Type:
    Frame & Chassis
    $594.99
    Qty in Cart: 0
    Price:
    $594.99
    Subtotal:
  • Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way Hookup

    Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air, 7-Way Hookup

    IOWA CUSTOMS

    $503.99
    Smooth Aluminum Recessed Air Line Box Radius Bottom W/ Flange, Trailer Air & 7-Way HookupThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight aluminum with a...
    09-050400009
    SKU:
    09-050400009
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Location:
    Made In USA
    Style Options:
    Recessed
    Type Options:
    Flush Mount
    $503.99
    Qty in Cart: 0
    Price:
    $503.99
    Subtotal:
  • Smooth Aluminum Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    Smooth Aluminum Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    IOWA CUSTOMS

    $490.99
    Smooth Aluminum Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way & 4/6-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight...
    09-050400006
    SKU:
    09-050400006
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Style Options:
    Flush Mount
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    $490.99
    Qty in Cart: 0
    Price:
    $490.99
    Subtotal:
  • Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way, 4/6-Way Hookups

    IOWA CUSTOMS

    $610.99
    Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way & 4/6-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of polished stainless...
    09-050400005
    SKU:
    09-050400005
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Polished
    Style Options:
    Flush Mount
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    $610.99
    Qty in Cart: 0
    Price:
    $610.99
    Subtotal:
  • Smooth Aluminum Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 2 7-Way Hookups

    Smooth Aluminum Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 2 7-Way Hookups

    IOWA CUSTOMS

    $490.99
    Smooth Aluminum Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air & 2 7-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of lightweight smooth...
    09-050400004
    SKU:
    09-050400004
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Finish Options:
    Smooth
    Style Options:
    Flush Mount
    Product Type:
    Frame & Chassis
    $490.99
    Qty in Cart: 0
    Price:
    $490.99
    Subtotal:
  • Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 2 7-Way Hookups

    Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 2 7-Way Hookups

    IOWA CUSTOMS

    $595.99
    Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air & 2 7-Way HookupsThis quality Iowa Customs recessed air line box fits most trucks. It is made of polished stainless steel...
    09-050400003
    SKU:
    09-050400003
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Polished
    Style Options:
    Flush Mount
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    $595.99
    Qty in Cart: 0
    Price:
    $595.99
    Subtotal:
  • Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way Hookup

    Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air, 7-Way Hookup

    IOWA CUSTOMS

    $595.99
    Stainless Steel Recessed Air Line Box 45 Degree Front W/ Flange, Trailer Air & 7-Way HookupThis quality Iowa Customs recessed air line box fits most trucks. It is made of polished stainless steel...
    09-050400002
    SKU:
    09-050400002
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Style Options:
    Flush Mount
    Finish Options:
    Polished
    Product Type:
    Frame & Chassis
    $595.99
    Qty in Cart: 0
    Price:
    $595.99
    Subtotal:
  • FREE SHIPPING OVER $249
    CSM Frame Pinch Bar For Deck Plate Mounting

    CSM Frame Pinch Bar For Deck Plate Mounting

    CHROME SHOP MAFIA

    $28.27
    Frame Pinch Bar For Deck Plate Mounting By Chrome Shop Mafia* High Quality Frame Pinch Bar * Made Of Aluminum* Used For Mounting Deck Plates (Deck Plate Not Included) - Deck Plates - Center Light...
    09-050344
    SKU:
    09-050344
    Length Options:
    32 Inch
    Location:
    Made In USA
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $28.27
    Qty in Cart: 0
    Price:
    $28.27
    Subtotal:
  • Slide In Rail Air Line Box Smooth Aluminum With Holes For 2 Air Lines, 7 Way Electric Plug, 4/6 Way Plug For Dyna Deck Modular Deck Plate Systems

    Slide In Rail Air Line Box Smooth Aluminum With Holes For 2 Air Lines, 7 Way Electric Plug, 4/6 Way Plug For Dyna Deck Modular Deck Plate Systems

    IOWA CUSTOMS

    $583.99
    Smooth Aluminum Slide In Rail Air Line Box W/ Mounting Brackets* High Quality Airline Box* Made Of Aluminum* Smooth Finish* Slide In Rail Design* Fits Dyna Deck Modular Deck Plate Systems* Includes: ...
    09-0503116
    SKU:
    09-0503116
    Location:
    Made In USA
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    Style Options:
    Slide-In Rail Design
    Type Options:
    Flush Mount
    Ready To Ship:
    Yes
    $583.99
    Qty in Cart: 0
    Price:
    $583.99
    Subtotal:
  • FREE SHIPPING
    18 Inch Slide-In Rail Recessed Airline Box Deck Plate W/ Trailer Air And 2 Holes For 7-Way Plug Smooth Aluminum

    18 Inch Slide-In Rail Recessed Airline Box Deck Plate W/ Trailer Air And 2 Holes For 7-Way Plug Smooth Aluminum

    IOWA CUSTOMS

    $595.99
    Smooth Aluminum Slide-In Rail Deck Plate-18 Inch Recessed Airline Box W/ Trailer Air And 2 Holes For 7-Way PlugUpgrade your truck with Iowa Customs' Recessed Airline Box with Trailer Air and holes...
    09-0503115
    SKU:
    09-0503115
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Style Options:
    Flush Mount
    Finish Options:
    Smooth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $595.99
    Qty in Cart: 0
    Price:
    $595.99
    Subtotal:
  • 18 Inch Slide-In Rail Recessed Airline Box Deck Plate W/ Trailer Air & 1 Hole For 7-Way Plug Smooth Aluminum

    18 Inch Slide-In Rail Recessed Airline Box Deck Plate W/ Trailer Air & 1 Hole For 7-Way Plug Smooth Aluminum

    IOWA CUSTOMS

    $571.99
    Smooth Aluminum Slide-In Rail Deck Plate-18 Inch Recessed Airline BoxUpgrade your truck with Iowa Customs' Recessed Airline Box with Trailer Air and hole for a 7 way plug! This sleek aluminum...
    09-0503114
    SKU:
    09-0503114
    Truck Class:
    Universal
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Flush Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $571.99
    Qty in Cart: 0
    Price:
    $571.99
    Subtotal:
  • Recessed Air Line Box 18 Inch Aluminum W/ Holes For Trailer Air And 2 Electric 7 Way Plugs

    Recessed Air Line Box 18 Inch Aluminum W/ Holes For Trailer Air And 2 Electric 7 Way Plugs

    IOWA CUSTOMS

    $487.99
    Iowa Customs Aluminum 18 Inch Recessed Air Line Box W/ Trailer Air And 2 Electric 7 Way Plugs* High Quality Air Line Box* Made Of Aluminum* 18 Inch* Recessed * With Trailer Air * 2 Electric 7 Way...
    09-0503024
    SKU:
    09-0503024
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    Flush Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $487.99
    Qty in Cart: 0
    Price:
    $487.99
    Subtotal:
  • Aluminum 20 Inch Deck Plate Filler

    Aluminum 20 Inch Deck Plate Filler

    IOWA CUSTOMS

    $294.99
    Deck Plate 20 Inch Filler Section AluminumUpgrade your Iowa Customs frame deck plates with this 20-inch smooth aluminum filler section. The easy-to-install flange attachment ensures a secure fit, so...
    09-0503021
    SKU:
    09-0503021
    Truck Class:
    Universal
    Make:
    Universal Items
    Length Options:
    20 Inch
    Style Options:
    Flush Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $294.99
    Qty in Cart: 0
    Price:
    $294.99
    Subtotal:
  • FREE SHIPPING
    Aluminum Deck Plate 18 Inch Sectional with Air line Box With Openings For Trailer Air & 7-Way Hookups

    Aluminum Deck Plate 18 Inch Sectional with Air line Box With Openings For Trailer Air & 7-Way Hookups

    IOWA CUSTOMS

    $456.99
    Sectional Deck Plate 18 Inch Aluminum with Air line BoxThis smooth aluminum deck plate measures 18 inches with a recessed air line box for easy integration of air lines. The box is designed to...
    09-0503013
    SKU:
    09-0503013
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    Flush Mount
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $456.99
    Qty in Cart: 0
    Price:
    $456.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    12 Inch Aluminum Sectional Deck Plate Filler Panel

    12 Inch Aluminum Sectional Deck Plate Filler Panel

    IOWA CUSTOMS

    Now: $118.99
    Was: $169.99
    Sectional Deck Plate 12 Inch Aluminum Filler Panel* Made Of High Quality Aluminum* 12 Inch* Made In USA* Sold Individually* Warranty On Deck Plate Filler Panels Against Defects In Workmanship &...
    09-0503012
    SKU:
    09-0503012
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Style Options:
    Surface Mount
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $118.99
    Was: $169.99
    Qty in Cart: 0
    Price:
    Now: $118.99
    Was: $169.99
    Subtotal:
  • Total: items /

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Shop Freightliner Classic Suspension and Chassis Parts

When it comes to finding the right Freightliner Classic XL parts to fix your suspension and ride height issues, 4 State Trucks stocks an enormous array of aftermarket replacement options. Whether you are addressing structural fatigue with heavy-duty frame rails and crossmembers or overhauling your front-end geometry with SBA air ride kits and leaf springs, we have the commercial-grade components required for the job. Restore your DOT compliance with high-performance shock absorbers and air valves, or upgrade your chassis utility with secure deck plates and frame steps. Our inventory includes model-specific suspension upgrade components and frame-chassis hardware parts. As you upgrade your frame-rail components, consider adding additional make/model-specific parts: Freightliner Classic fuel tanks, Freightliner classic visor or a new Freightliner Classic battery box. Find everything you need to refurbish and repair your big rig.

Frequently Asked Questions About Freightliner Classic Frame & Chassis

What are the differences between steel and aluminum bumpers for my Freightliner Classic?

Steel bumpers typically weigh 150-200 lbs and offer superior impact resistance and durability, making them ideal for heavy-duty applications and harsh weather conditions. They're generally 30-40% less expensive than aluminum but require regular maintenance to prevent rust. Aluminum bumpers weigh about 60-80 lbs, won't rust, and provide better fuel economy due to weight savings. However, they're more prone to denting and cost significantly more upfront. Most owner-operators choose steel for work trucks and aluminum for show trucks or when weight restrictions are critical.

Will aftermarket bumpers fit my specific Freightliner Classic model year?

Most aftermarket bumpers are designed to fit Freightliner Classic models from 1990-2007, but there are important variations. Pre-2000 models often have different mounting hole patterns and may require adapter brackets. The FLD 112/120 and Classic XL have wider frames that need specific bumper widths (typically 18" or 20" options). Always verify your frame rail width and mounting hole spacing before ordering. Look for bumpers that specify compatibility with your exact model designation (FLC, FLD, or Classic XL) and year range to ensure proper fitment without modifications.

What tools and skills do I need to install a new bumper myself?

Installing a Freightliner Classic bumper requires basic mechanical skills and these tools: 3/4" and 7/8" sockets and wrenches, torque wrench capable of 150-200 ft-lbs, floor jack or forklift to support the bumper weight, and safety equipment. The process typically takes 2-4 hours with a helper. Key challenges include aligning heavy bumpers with mounting holes and achieving proper torque specs (usually 150-175 ft-lbs for frame bolts). Many customers report difficulty with rusted or seized bolts on older trucks. Having penetrating oil and possibly a torch available is recommended. Professional installation typically costs $200-400 if you prefer to avoid these challenges.

What finish options hold up best against road salt and weather?

Chrome-plated steel remains the most popular choice, offering excellent appearance when maintained but requiring regular polishing and can show pitting after 3-5 years in salt states. Powder-coated finishes in black or custom colors provide superior corrosion resistance and typically last 5-7 years without significant maintenance. Polished aluminum naturally resists corrosion but shows water spots and requires frequent cleaning. For maximum durability in harsh conditions, consider bumpers with e-coating underneath chrome plating or opt for heavy-duty powder coating with a clear protective topcoat. Stainless steel options are available but typically cost 2-3 times more than standard chrome.

Can I mount accessories like light bars or air hoses to aftermarket bumpers?

Most quality aftermarket bumpers come pre-drilled for standard accessories or include mounting provisions. Common mounting points include centered holes for light bars (typically supporting up to 50" bars), side mounting tabs for work lights or air hose hangers, and tow hook or shackle mounting points rated for 20,000-30,000 lbs. When selecting a bumper, verify it has the specific mounting features you need - not all bumpers include fog light provisions or airline holes. Adding holes after purchase is possible but may void warranties and compromise chrome plating. Many bumpers also offer optional bolt-on accessories like step plates, license plate holders, and bumper guards that don't require drilling.


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