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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.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 420A Hinge Assembly W/ Rubber Bushings

    420A Hinge Assembly W/ Rubber Bushings

    PREMIER

    $2,121.99
    Hinge Assembly Accepts 2 X 4 Inch Rectangular Tubing* High Quality Hinge Assembly* Includes:  - Locknut  - (2) Flat Washers  - (2) Bolts And Nuts  - Bracket  - Taper Pin  - Housing  - Poly Bushing  -...
    09-051100846
    SKU:
    09-051100846
    Rating:
    150000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2,121.99
    Qty in Cart: 0
    Price:
    $2,121.99
    Subtotal:
  • Replacement Rubber Bushing For Use With 546A And 556A Front End Housing

    Replacement Rubber Bushing For Use With 546A And 556A Front End Housing

    PREMIER

    $98.99
    Replacement Rubber Bushing W/ 2 Inch ID* High Quality Replacement Bushing* 4-3/4 Inch OD X 5-3/16 Inch L X 2 Inch ID * Rubber Bushing* For Use With 546A And 556A Front End Housing* Made In USA* Sold...
    09-051100828
    SKU:
    09-051100828
    Truck Class:
    Universal
    Diameter Options:
    4 3/4 Inch
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $98.99
    Qty in Cart: 0
    Price:
    $98.99
    Subtotal:
  • 930A Hinge Assembly W/ Poly Bushings

    930A Hinge Assembly W/ Poly Bushings

    PREMIER

    $1,556.99
    Hinge Assembly Accepts 2 X 4 Inch Rectangular Tubing Or Channel* High Quality Hinge Assembly* Includes:  - Locknut   - (2) Flat Washers  - (2) Bolts And Nuts  - Bracket   - Pin  - Housing   - (2)...
    09-051100857
    SKU:
    09-051100857
    Truck Class:
    Universal
    Rating:
    150000 LBS
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,556.99
    Qty in Cart: 0
    Price:
    $1,556.99
    Subtotal:
  • Replacement Poly Bushings For Use W/ 320 & 330 Hinge

    Replacement Poly Bushings For Use W/ 320 & 330 Hinge

    PREMIER

    $90.99
    3.5 OD Poly Bushing W/ Tapered Hole* High Quality Replacement Bushing* 3-1/2 Inch OD X 4-1/2 Inch Length* Poly Bushing* With Tapered Hole * For Use With 320 And 330 Hinge Assemblies* Made In USA*...
    09-051100842
    SKU:
    09-051100842
    Diameter Options:
    3 1/2 Inch
    Color:
    Orange
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $90.99
    Qty in Cart: 0
    Price:
    $90.99
    Subtotal:
  • 546 Front End Housing For Use W/ 207SE, 307SE, 405SE, 407SE Swivel Drawbar Eyes

    546 Front End Housing For Use W/ 207SE, 307SE, 405SE, 407SE Swivel Drawbar Eyes

    PREMIER

    $323.99
    9-5/8 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* 9-5/8 Inch Length X 5-1/4 Inch OD X 1/4 Inch Wall* For Use With 207SE/307SE/405SE/407SE Swivel Drawbar...
    09-051100824
    SKU:
    09-051100824
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $323.99
    Qty in Cart: 0
    Price:
    $323.99
    Subtotal:
  • 450 Hinge Assembly W/ Rubber Bushing

    450 Hinge Assembly W/ Rubber Bushing

    PREMIER

    $970.99
    Hinge Assembly Accepts 2.5 Inch Tubing* High Quality Hinge Assembly* Includes:   - (2) Bolts And Nuts  - Bracket  - Pin  - Adjustable Shoe  - Housing  - (2) Bolts  - (2) Rubber Bushings  - (2)...
    09-051100853
    SKU:
    09-051100853
    Truck Class:
    Universal
    Rating:
    100000 LBS
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $970.99
    Qty in Cart: 0
    Price:
    $970.99
    Subtotal:
  • 536A Front End Housing W/ Rubber Bushings For Use W/ 207K, 207S, 307K, 307S, 405S Swivel Drawbar Eyes

    536A Front End Housing W/ Rubber Bushings For Use W/ 207K, 207S, 307K, 307S, 405S Swivel Drawbar Eyes

    PREMIER

    $407.99
    4-1/2 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* Includes:  - Housing  - Rubber Bushings  - Washer* Inside Diameter 2 Inch* Outside Diameter 4-1/4 Inch*...
    09-051100820
    SKU:
    09-051100820
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $407.99
    Qty in Cart: 0
    Price:
    $407.99
    Subtotal:
  • Replacement Poly Bushings For Use W/ 307BK Hinge

    Replacement Poly Bushings For Use W/ 307BK Hinge

    MINIMIZER

    $125.99
    Poly Bushings W/ 4.25 Inch OD* High Quality Replacement Bushing* 4-3/4 Inch OD X 3-1/2 Inch Length X 2-1/4 Inch ID * Poly Bushing* For Use With 307BK And 956BK* Made In USA* Sold Individually*...
    09-051100838
    SKU:
    09-051100838
    Color:
    Orange
    Truck Class:
    Universal
    Diameter Options:
    4 3/4 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $125.99
    Qty in Cart: 0
    Price:
    $125.99
    Subtotal:
  • 440 Hinge Assembly W/ Rubber Bushings

    440 Hinge Assembly W/ Rubber Bushings

    PREMIER

    $958.99
    Hinge Assembly Accepts 3 Inch Standard Or Square Tubing* High Quality Hinge Assembly* Includes:  - (2) Bolts And Nuts  - Housing  - Bracket  - Pin  - Adjustable Shoe  - (2) Bolts  - (2) Rubber...
    09-051100849
    SKU:
    09-051100849
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $958.99
    Qty in Cart: 0
    Price:
    $958.99
    Subtotal:
  • 435A Front End Housing For Use W/ 207S, 307S, 405S Swivel Drawbar Eyes

    435A Front End Housing For Use W/ 207S, 307S, 405S Swivel Drawbar Eyes

    PREMIER

    $974.99
    4.5 Inch Front End Housing Accepts 2.5 Inch Rectangular Tubing Or Standard Channel* High Quality Front End Housing* Includes:  - Housing  - Washer  - Poly Bushings* Inside Diameter 2 Inch* Outside...
    09-051100816
    SKU:
    09-051100816
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $974.99
    Qty in Cart: 0
    Price:
    $974.99
    Subtotal:
  • 556A Front End Housing W/ Rubber Bushings For Use W/ 207SE, 307SE, 405SE And 407SE Swivel Drawbar Eyes

    556A Front End Housing W/ Rubber Bushings For Use W/ 207SE, 307SE, 405SE And 407SE Swivel Drawbar Eyes

    PREMIER

    $496.99
    5-3/16 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* Includes:  - Housing  - Rubber Bushings  - Washer* Bushing Inside Diameter 2 Inch* Bushing Outside...
    09-051100832
    SKU:
    09-051100832
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $496.99
    Qty in Cart: 0
    Price:
    $496.99
    Subtotal:
  • Replacement Poly For Use With 340S And 640S Front End Housing

    Replacement Poly For Use With 340S And 640S Front End Housing

    PREMIER

    $72.99
    Replacement Poly Bushing W/ 2 Inch ID* High Quality Replacement Bushing* 3-1/2 Inch X 3-1/2 Inch With 2 Inch ID * Poly Bushing* For Use With 340S And 640S Front End Housing* Made In USA* Sold...
    09-051100812
    SKU:
    09-051100812
    Color:
    Orange
    Diameter Options:
    3 1/2 Inch
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • 420 Hinge Assembly W/ Rubber Bushings

    420 Hinge Assembly W/ Rubber Bushings

    PREMIER

    $1,948.99
    Hinge Assembly Accepts 2 X 4 Inch Rectangular Tubing* High Quality Hinge Assembly* Includes:   - Locknut  - (2) Flat Washers  - (2) Bolts And Nuts  - Bracket  - Taper Pin  - Housing  - Rubber...
    09-051100845
    SKU:
    09-051100845
    Truck Class:
    Universal
    Rating:
    150000 LBS
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,948.99
    Qty in Cart: 0
    Price:
    $1,948.99
    Subtotal:
  • 546R Front End Housing W/ Rubber Bushing For Use W/ 207SE Swivel Drawbar Eyes

    546R Front End Housing W/ Rubber Bushing For Use W/ 207SE Swivel Drawbar Eyes

    PREMIER

    $449.99
    5-3/16 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* Includes:   - Housing  - Rubber Bushings  - Washer* Bushing Inside Diameter 2-1/2 Inch* Bushing Outside...
    09-051100827
    SKU:
    09-051100827
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $449.99
    Qty in Cart: 0
    Price:
    $449.99
    Subtotal:
  • Replacement Rubber Bushings For Use W/ 320 & 330 Hinge

    Replacement Rubber Bushings For Use W/ 320 & 330 Hinge

    PREMIER

    $46.81
    3.5 Inch OD Rubber Bushing W/ Tapered Hole* High Quality Replacement Bushing* 3-1/2 Inch OD X 4-1/2 Inch Length* With Tapered Hole * For Use With 320 And 330 Hinge Assemblies* Made In USA* Sold...
    09-051100841
    SKU:
    09-051100841
    Truck Class:
    Universal
    Diameter Options:
    3 1/2 Inch
    Material Options:
    Rubber
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $46.81
    Qty in Cart: 0
    Price:
    $46.81
    Subtotal:
  • Replacement Poly Bushing For Use With 536BK Front End Assembly

    Replacement Poly Bushing For Use With 536BK Front End Assembly

    PREMIER

    $129.99
    Replacement Bushing W/ 2.25 Inch ID* High Quality Replacement Bushing* 4-1/4 Inch X 4-1/2 Inch With 2-1/4 Inch ID * Poly Bushing* For Use With 536BK Front End Housing* Made In USA* Sold Individually*...
    09-051100823
    SKU:
    09-051100823
    Diameter Options:
    4 1/4 Inch
    Color:
    Orange
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $129.99
    Qty in Cart: 0
    Price:
    $129.99
    Subtotal:
  • 956BK Front End Housing With Poly Bushing For 307K Swivel Drawbar Eyes

    956BK Front End Housing With Poly Bushing For 307K Swivel Drawbar Eyes

    PREMIER

    $748.99
    8.25 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* Includes:   - Housing   - (2) Poly Bushings  - Internal Polymer Washer  - External Polymer Washer   -...
    09-051100835
    SKU:
    09-051100835
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $748.99
    Qty in Cart: 0
    Price:
    $748.99
    Subtotal:
  • FREE SHIPPING
    536 Front End Housing For Use W/ 207K, 207S, 307K, 307S, 405S Swivel Drawbar Eyes

    536 Front End Housing For Use W/ 207K, 207S, 307K, 307S, 405S Swivel Drawbar Eyes

    PREMIER

    $300.99
    8-1/4 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* Housing Only, Washer And Bushing Sold Separately* Dimensions:  - 8-1/4 Inch Length  - 5 Inch OD  - 3/8...
    09-051100819
    SKU:
    09-051100819
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $300.99
    Qty in Cart: 0
    Price:
    $300.99
    Subtotal:
  • 556 Front End Housing For Use W/ Swivel Drawbar Eyes For Use W/ 207SE, 307SE, 405SE, 407SE Swivel Drawbar Eyes

    556 Front End Housing For Use W/ Swivel Drawbar Eyes For Use W/ 207SE, 307SE, 405SE, 407SE Swivel Drawbar Eyes

    PREMIER

    $341.99
    9-5/8 Inch Front End Housing For Use W/ Swivel Drawbar Eyes* High Quality Front End Housing* 9-5/8 Inch Length X 5-1/2 Inch OD X 3/8 Inch Wall* For Use With 207SE/307SE/405SE/407SE Swivel Drawbar...
    09-051100831
    SKU:
    09-051100831
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $341.99
    Qty in Cart: 0
    Price:
    $341.99
    Subtotal:
  • 435 Front End Housing For Use W/ 207S, 307S, 405S Swivel Drawbar Eyes

    435 Front End Housing For Use W/ 207S, 307S, 405S Swivel Drawbar Eyes

    PREMIER

    $810.99
    4.5 Inch Front End Housing Accepts 2X4 Inch Rectangular Tubing Or Standard Channel* High Quality Front End Housing* Includes:  - Housing  - Washer  - Rubber Bushings* Inside Diameter 2 Inch* Outside...
    09-051100815
    SKU:
    09-051100815
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $810.99
    Qty in Cart: 0
    Price:
    $810.99
    Subtotal:
  • Total: items /

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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