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Kenworth Frame & Chassis

Reinforce your Kenworth's core with 4 State Trucks' superior Kenworth semi truck frame and chassis components. Count on us for high-grade Kenworth frame and chassis parts that boost structural integrity and durability, guaranteeing your rig handles every payload with unwavering stability. From critical replacements to performance-enhancing upgrades, our parts ensure your Kenworth semi truck's foundation remains rock-solid, making each journey safer and more dependable. Choose 4 State Trucks to fortify your Kenworth's backbone, providing the sturdy base needed for optimal performance and longevity. Whether you're navigating city streets or conquering long-haul routes, our frame and chassis components give you the confidence to tackle any challenge, load after load.
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  • FREE SHIPPING OVER $249
    Poly Fairing Bushing For Kenworth T680

    Poly Fairing Bushing For Kenworth T680

    AUTOMANN USA

    $25.44 - $34.85
    Ensure optimal stability and long-lasting performance for your Kenworth T680 fairings with these high-quality Poly Fairing Bushings. The Poly Upper Front Fairing Bushing is engineered for precise...
    PPR_204257
    SKU:
    PPR_204257
    Position:
    Upper
    Truck Class:
    Heavy Duty
    Material Options:
    Rubber
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $25.44 - $34.85
    Qty in Cart: 0
    Price:
    $25.44 - $34.85
    Subtotal:
  • BESTfit Poly Silent Block Spring Bushing For Peterbilt, Kenworth

    BESTfit Poly Silent Block Spring Bushing For Peterbilt, Kenworth

    BESTFIT TRUCK PARTS

    $52.99 - $56.99
    Maintain dependable suspension performance with BESTfit Poly Silent Block Spring Bushings for Peterbilt and Kenworth trucks. Designed to help reduce suspension noise, absorb road shock, and minimize...
    PPR_204256
    SKU:
    PPR_204256
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $52.99 - $56.99
    Qty in Cart: 0
    Price:
    $52.99 - $56.99
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  • Air Line Adapter Fitting For Air Spring For Kenworth

    Air Line Adapter Fitting For Air Spring For Kenworth

    AUTOMANN USA

    $89.99
    The Air Line Adapter Fitting for Kenworth Air Springs delivers dependable, leak-free performance for critical air suspension systems. Designed for exact fit and durability, it allows smooth air flow...
    PPR_204197
    SKU:
    PPR_204197
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Position:
    Passenger Side
    Ready To Ship:
    Yes
    $89.99
    Qty in Cart: 0
    Price:
    $89.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD Coiled 1/4 Inch Air Line For 5th Wheel Air Slide Cylinder With Fittings

    TPHD Coiled 1/4 Inch Air Line For 5th Wheel Air Slide Cylinder With Fittings

    TPHD

    $19.76
    Improve reliability in your fifth wheel air system with this coiled 1/4-inch air line designed for 5th wheel air slide cylinder applications with fittings included. Built with a coiled construction,...
    PPR_204189
    SKU:
    PPR_204189
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Diameter Options:
    1/4 Inch
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $19.76
    Qty in Cart: 0
    Price:
    $19.76
    Subtotal:
  • FREE SHIPPING OVER $249
    Poly Fifth Wheel Lube Disks W/ Steel Retention Clip

    Poly Fifth Wheel Lube Disks W/ Steel Retention Clip

    BUYERS PRODUCTS

    $23.10 - $39.61
    Keep your fifth wheel system operating smoothly with the poly fifth wheel lube disk with steel retention clip, designed to reduce friction between the hitch and trailer kingpin. This 32-inch diameter...
    PPR_204188
    SKU:
    PPR_204188
    Truck Class:
    Heavy Duty
    Color:
    Black
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $23.10 - $39.61
    Qty in Cart: 0
    Price:
    $23.10 - $39.61
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  • 3-3/8 Inch Pivot Tube - 2.0 Inch OD

    3-3/8 Inch Pivot Tube - 2.0 Inch OD

    AFTERMARKET

    $78.99 - $83.99
    This 3-3/8 inch pivot tube with a 2.0-inch outer diameter is designed for heavy-duty truck and custom fabrication applications where precise fitment and durability are important. Manufactured as a...
    PPR_203808
    SKU:
    PPR_203808
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $78.99 - $83.99
    Qty in Cart: 0
    Price:
    $78.99 - $83.99
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  • Smooth Aluminum Step Box W/ Wide Opening Lid

    Smooth Aluminum Step Box W/ Wide Opening Lid

    BUYERS PRODUCTS

    $728.99 - $1,016.99
    Optimize your rig with this smooth aluminum step box with a wide opening lid, measuring 23.31 x 28.5 inches. Built from corrosion-resistant aluminum, this aftermarket step box is designed for...
    PPR_203645
    SKU:
    PPR_203645
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Truck Class:
    Heavy Duty
    Product Type:
    Toolboxes
    Width Options:
    48 Inch
    Length Options:
    29 Inch
    Height Options:
    40 Inch
    $728.99 - $1,016.99
    Qty in Cart: 0
    Price:
    $728.99 - $1,016.99
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  • Retractable 2 Rung Truck Step - 17.375 Inch Wide X 30.25 Inch Height

    Retractable 2 Rung Truck Step - 17.375 Inch Wide X 30.25 Inch Height

    BUYERS PRODUCTS

    $121.99 - $142.99
    Make cab access easier with this retractable 2-rung truck step. Measuring 17.375 inches wide by 30.25 inches high, this compact step provides two non-slip treads for added footing while climbing in...
    PPR_203467
    SKU:
    PPR_203467
    Truck Class:
    Universal
    Height Options:
    30 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Color:
    Black
    Color:
    Yellow
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $121.99 - $142.99
    Qty in Cart: 0
    Price:
    $121.99 - $142.99
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  • Retractable 3 Rung Truck Step - 17.375 Inch Wide X 35 Inch Height

    Retractable 3 Rung Truck Step - 17.375 Inch Wide X 35 Inch Height

    BUYERS PRODUCTS

    $130.99 - $149.99
    Step into your rig with this 17.38 x 35 inch retractable 3-rung truck step. Built from carbon steel with a black powder-coated finish, it offers a durable structure intended for regular use in...
    PPR_203466
    SKU:
    PPR_203466
    Truck Class:
    Universal
    Height Options:
    35 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $130.99 - $149.99
    Qty in Cart: 0
    Price:
    $130.99 - $149.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Camshafts 1.5 Inch-10 For Hendrickson INTRAAX W/ 16.5 Inch HXS

    BESTfit Camshafts 1.5 Inch-10 For Hendrickson INTRAAX W/ 16.5 Inch HXS

    BESTFIT TRUCK PARTS

    $36.39
    Keep your Hendrickson INTRAAX suspension operating smoothly with these BESTfit 1.5-inch 10-spline camshafts designed for 16.5-inch HXS applications. Available for both driver and passenger sides,...
    PPR_203419
    SKU:
    PPR_203419
    Truck Class:
    Universal
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $36.39
    Qty in Cart: 0
    Price:
    $36.39
    Subtotal:
  • FREE SHIPPING OVER $249
    Lower Driver/Passenger Side Adjustable Suspension Control Arm

    Lower Driver/Passenger Side Adjustable Suspension Control Arm

    DAYTON / DORMAN

    $200.99
    Improve suspension stability and alignment with these lower adjustable suspension control arms designed for Freightliner Cascadia models. Available for both driver and passenger sides, these...
    PPR_203417
    SKU:
    PPR_203417
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Color:
    Black
    Material Options:
    Steel
    Make:
    Freightliner
    Product Type:
    Frame & Chassis
    Make:
    Dodge
    Make:
    Other - Pickup Truck
    $200.99
    Qty in Cart: 0
    Price:
    $200.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD Rubber Brake Hose 1/2 Inch With 3/8 MPT Swivel Ends

    TPHD Rubber Brake Hose 1/2 Inch With 3/8 MPT Swivel Ends

    TPHD

    $13.21 - $31.96
    The TPHD Rubber Brake Hose is designed for heavy-duty brake system applications. It features a 1/2-inch rubber hose construction paired with 3/8-inch MPT swivel ends on both sides, which helps...
    PPR_202884
    SKU:
    PPR_202884
    Truck Class:
    Universal
    Material Options:
    Rubber
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $13.21 - $31.96
    Qty in Cart: 0
    Price:
    $13.21 - $31.96
    Subtotal:
  • On Sale
    Limited Quantity Available
    Roadworks Stainless Steel Step Plate Tape Mount 4 Inch Wide X 1/2 Inch Tall

    Roadworks Stainless Steel Step Plate Tape Mount 4 Inch Wide X 1/2 Inch Tall

    ROADWORKS

    $69.26 - $181.99
    Make your ride stand out with this step plate, constructed from high-quality 430 stainless steel. Designed with a tape-mount system, it allows for straightforward installation without complex...
    PPR_202812
    SKU:
    PPR_202812
    Truck Class:
    Universal
    Location:
    Made In USA
    Width Options:
    4 Inch
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $69.26 - $181.99
    Qty in Cart: 0
    Price:
    $69.26 - $181.99
    Subtotal:
  • FREE SHIPPING
    CSM Stainless Steel Surface-Mount Air Line Box

    CSM Stainless Steel Surface-Mount Air Line Box

    CHROME SHOP MAFIA

    $320.99 - $401.99
    Revamp your rig with the CSM Stainless Steel Surface Mount Air Line Box, an essential component for truck owners seeking to streamline their air line and electrical connections. Made from durable 304...
    PPR_202176
    SKU:
    PPR_202176
    Length Options:
    32 Inch
    Truck Class:
    Universal
    Location:
    Made In USA
    Style Options:
    Surface Mount
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Ready To Ship:
    Yes
    Product Type:
    Air, Electrical, & Safety
    $320.99 - $401.99
    Qty in Cart: 0
    Price:
    $320.99 - $401.99
    Subtotal:
  • FREE SHIPPING
    CSM Stainless Steel Trough Style Flush-Mount Air Line Box

    CSM Stainless Steel Trough Style Flush-Mount Air Line Box

    CHROME SHOP MAFIA

    $303.99 - $337.99
    The Stainless Steel Trough Style Flush Mount Air Line Box is a must-have to organize air lines and electrical connections efficiently. Constructed from durable 304 stainless steel, this air line box...
    PPR_202175
    SKU:
    PPR_202175
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Style Options:
    Flush Mount
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $303.99 - $337.99
    Qty in Cart: 0
    Price:
    $303.99 - $337.99
    Subtotal:
  • Smooth Aluminum In-Frame Deck Plate Flush Mount

    Smooth Aluminum In-Frame Deck Plate Flush Mount

    IOWA CUSTOMS

    $363.99 - $794.99
    Improve your ride with the Smooth Aluminum Flush Mount In-Frame Deck Plate which offers exceptional durability and a polished look. Crafted from high-quality aluminum, this deck plate is designed to...
    PPR_202164
    SKU:
    PPR_202164
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Style Options:
    Flush Mount
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $363.99 - $794.99
    Qty in Cart: 0
    Price:
    $363.99 - $794.99
    Subtotal:
  • Diamond Plate Aluminum In-Frame Deck Plate Flush-Mount

    Diamond Plate Aluminum In-Frame Deck Plate Flush-Mount

    IOWA CUSTOMS

    $498.99 - $1,129.99
    Upgrade your look with the Diamond Plate Aluminum Flush Mount In-Frame Deck Plate, a robust accessory designed for adding more shine. Made from high-strength diamond tread aluminum, this deck plate...
    PPR_202163
    SKU:
    PPR_202163
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Diamond Plate
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $498.99 - $1,129.99
    Qty in Cart: 0
    Price:
    $498.99 - $1,129.99
    Subtotal:
  • FREE SHIPPING OVER $249
    CSM 34 Inch Stainless Steel Deck Plates With Length Options

    CSM 34 Inch Stainless Steel Deck Plates With Length Options

    CHROME SHOP MAFIA

    $225.99 - $1,044.99
    The CSM 34 Inch Wide Stainless Steel Deck Plate is made from high-quality 304 stainless steel, and available in various lengths ranging from 2 feet to 10 feet. Each deck plate comes complete with...
    PPR_202162
    SKU:
    PPR_202162
    Location:
    Made In USA
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $225.99 - $1,044.99
    Qty in Cart: 0
    Price:
    $225.99 - $1,044.99
    Subtotal:
  • Merritt 12 X 18 Inch Assist Handles For Saddle / Step Boxes

    Merritt 12 X 18 Inch Assist Handles For Saddle / Step Boxes

    MERRITT

    $177.99 - $448.99
    Improve truck safety and accessibility with the Merritt 12 18 Inch Assist Handles, designed for saddle and step boxes. Constructed from heavy-duty materials, these handles provide a reliable grip for...
    PPR_202098
    SKU:
    PPR_202098
    Truck Class:
    Universal
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Toolboxes
    Ready To Ship:
    Yes
    $177.99 - $448.99
    Qty in Cart: 0
    Price:
    $177.99 - $448.99
    Subtotal:
  • FREE SHIPPING
    Bawer Stainless Steel Door Shells For 24 Inch Tall Tool Boxes

    Bawer Stainless Steel Door Shells For 24 Inch Tall Tool Boxes

    BAWER TOOL BOXES

    $344.99 - $364.99
    Restore or upgrade a truck tool box door without replacing the entire unit with the Bawer stainless steel door shell for 24?inch tall tool boxes. These replacement door shells are made from...
    PPR_202055
    SKU:
    PPR_202055
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Universal Items
    Product Type:
    Toolboxes
    Ready To Ship:
    Yes
    $344.99 - $364.99
    Qty in Cart: 0
    Price:
    $344.99 - $364.99
    Subtotal:
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Adding your products to cart

Find the premium, aftermarket parts for your Kenworth Frame & Chassis. This category has everything you need for your Kenworth's frame, chassis, and suspension. Find air tanks, shocks, bushings, leaf springs, and more to maintain your truck's structural integrity and smooth ride for models like the T800, W900, and T660. Replacement Parts: Direct-fit OEM replacements for seamless installation. Performance Upgrades: Stiffer leaf springs and adjustable shocks for better handling and weight capacity. Custom Accessories: stainless trim, fender flares, and mud flaps to enhance style and protection. Whether you're doing repairs, boosting performance, or customizing your rig's look, this category has you covered.

Frequently Asked Questions About Kenworth Frame & Chassis

What years and models are compatible with your Kenworth frame and chassis parts?

Our Kenworth frame and chassis components are designed for W900, T800, T880, T680, and T660 models. Most parts fit 1985-current year models, but compatibility varies by specific component. Always check the product description for exact year ranges, or contact our team with your OEM for guaranteed fitment. We maintain detailed compatibility charts for each product to ensure proper installation.

Are these aftermarket or OEM Kenworth frame parts, and what's the quality difference?

We carry both genuine OEM Kenworth parts and high-quality aftermarket alternatives. OEM parts guarantee exact factory specifications and fitment. Our aftermarket options are manufactured to meet or exceed OEM standards, often using upgraded materials like 304 stainless steel instead of mild steel. All aftermarket suppliers are vetted for quality control and many offer lifetime warranties on their products.

What tools and experience level do I need to install frame-mounted accessories?

Most frame-mounted accessories require basic hand tools, a drill with metal bits, and safety equipment. Installation difficulty ranges from simple bolt-on parts (30-60 minutes) to more complex items requiring cutting or welding. Professional installation is recommended for structural modifications or if you lack experience with heavy truck maintenance.

What finish options are available and how do they hold up against road salt and weather?

Common finishes include chrome-plated steel, polished stainless steel, powder-coated steel, and raw steel for custom painting. Stainless steel offers the best corrosion resistance without maintenance. Chrome requires regular cleaning to prevent pitting. Powder coating provides excellent protection when properly applied. For trucks operating in salt-heavy regions, we recommend stainless steel or powder-coated options with zinc primer.

Do frame extensions or modifications affect my truck's warranty or DOT compliance?

Frame modifications can potentially void manufacturer warranties if not performed to factory specifications. Always consult your warranty documentation before making structural changes. For DOT compliance, ensure any modifications maintain proper weight distribution and don't exceed manufacturer GVWR ratings. Frame extensions must be properly reinforced and may require engineering certification in some states. We recommend consulting a certified truck mechanic or frame shop for major modifications.


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