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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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  • On Sale
    Limited Quantity Available
    CSM Mounting Kit For CSM 18 x 18 x 48 Inch Toolboxes

    CSM Mounting Kit For CSM 18 x 18 x 48 Inch Toolboxes

    CHROME SHOP MAFIA

    Now: $169.43
    Was: $254.99
    18 x 18 x 48 Inch Tool Box Mounting Kit W/ Bottom & Triangle Side Supports By Chrome Shop Mafia* High Quality Mounting Kit* Made Of Black Powder Coated Steel* 18 Inch X 18 Inch X 48 Inch * 1 Piece...
    09-020118481
    SKU:
    09-020118481
    Length Options:
    18 Inch
    Color:
    Black
    Truck Class:
    Universal
    Width Options:
    18 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Cargo Control
    Ready To Ship:
    Yes
    Now: $169.43
    Was: $254.99
    Qty in Cart: 0
    Price:
    Now: $169.43
    Was: $254.99
    Subtotal:
  • Gabriel Fleetline Steer Shock Absorber Replaces 65159

    Gabriel Fleetline Steer Shock Absorber Replaces 65159

    AFTERMARKET

    $71.99
    Steer Shock Absorber Fits Kenworth* High Quality Steer Shock* Extended Length 25.59 Inch* Collapsed Length 15.83 Inch* Sold Individually* Warranty On Steer Shocks Against Defects In Workmanship &...
    02-0500002
    SKU:
    02-0500002
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Fleetline Drive Shock Absorber Replaces 65524

    Gabriel Fleetline Drive Shock Absorber Replaces 65524

    GABRIEL

    $81.99
    Drive Shock Absorber Fits KenworthImprove your truck's suspension efficiency with the Gabriel Fleetline Drive Shock Absorber. Engineered for precision, this high-quality shock features 17.27-inch...
    02-0500004
    SKU:
    02-0500004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $81.99
    Qty in Cart: 0
    Price:
    $81.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Gas SLX Adjustable Steer Shock Replaces 65159

    Gabriel Gas SLX Adjustable Steer Shock Replaces 65159

    GABRIEL

    $86.99
    Adjustable Steer Shock Fits Kenworth* High Quality Steer Shock* Extended Length 25.59 Inch* Collapsed Length 15.83 Inch* Sold Individually* Warranty On Steer Shocks Against Defects In Workmanship &...
    02-0500005
    SKU:
    02-0500005
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $86.99
    Qty in Cart: 0
    Price:
    $86.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Fleetline Drive Shock Absorber Replaces 65523

    Gabriel Fleetline Drive Shock Absorber Replaces 65523

    GABRIEL

    $90.99
    Drive Shock Absorber Fits Kenworth* High Quality Drive Shock* Extended Length 19.04 Inch* Collapsed Length 12.35 Inch* Sold Individually* Warranty On Drive Shocks Against Defects In Workmanship &...
    02-0500003
    SKU:
    02-0500003
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $90.99
    Qty in Cart: 0
    Price:
    $90.99
    Subtotal:
  • Gabriel Fleetline Drive Shock Absorber Replaces 65404, 66424, 74409

    Gabriel Fleetline Drive Shock Absorber Replaces 65404, 66424, 74409

    AFTERMARKET

    $87.99
    Drive Shock Absorber Fits Kenworth & International* High Quality Drive Shock* Extended Length 18.63 Inch* Collapsed Length 11.71 Inch* Stroke 6.92 Inch* Sold Individually* Warranty On Drive Shocks...
    02-0500001
    SKU:
    02-0500001
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $87.99
    Qty in Cart: 0
    Price:
    $87.99
    Subtotal:
  • Spring Brake Chamber Type 30/30 Long Stroke W/ Welded Clevis

    Spring Brake Chamber Type 30/30 Long Stroke W/ Welded Clevis

    AFTERMARKET

    $144.99
    Maintain superior braking performance with the BESTfit 30/30 Long Stroke Spring Brake Chamber with Welded Clevis, engineered for heavy-duty trucks requiring reliable stopping power. Its long-stroke...
    PPR_206049
    SKU:
    PPR_206049
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Length Options:
    3 Inch
    Product Type:
    Frame & Chassis
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • U Shaped Air Disc Brake Rotor For Mercedes, Setra

    U Shaped Air Disc Brake Rotor For Mercedes, Setra

    AFTERMARKET

    $363.99 - $580.99
    Choose Option(s) to see description.17 Inch Air Disc Brake Rotor 6231000870. A6274210012 For Mercedes, SetraU Shaped 10 Hole Air Disc Rotor 17 Inch* High Quality Air Disc Rotor* Disc O.D.- 17.00...
    PPR_206050
    SKU:
    PPR_206050
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $363.99 - $580.99
    Qty in Cart: 0
    Price:
    $363.99 - $580.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    FREE SHIPPING OVER $249
    CSM Corrugated Floor Plate For CSM Heavy Duty Aluminum Tool Boxes

    CSM Corrugated Floor Plate For CSM Heavy Duty Aluminum Tool Boxes

    CHROME SHOP MAFIA

    $32.23 - $114.99
    Upgrade your CSM Heavy Duty Aluminum Tool box with the CSM Corrugated Floor Plate. Constructed from high-quality aluminum, this replacement floor plate features a corrugated design that enhances...
    PPR_206065
    SKU:
    PPR_206065
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Length Options:
    48 Inch
    Length Options:
    36 Inch
    Width Options:
    18 Inch
    Product Type:
    Toolboxes
    Ready To Ship:
    Yes
    $32.23 - $114.99
    Qty in Cart: 0
    Price:
    $32.23 - $114.99
    Subtotal:
  • Air Powered 4 Trumpet Train Horn W/ Mounting Pad, Hardware & 155 DB Output

    Air Powered 4 Trumpet Train Horn W/ Mounting Pad, Hardware & 155 DB Output

    UNITED PACIFIC

    $213.99 - $220.99
    Choose Option(s) to see description.Chrome Air Powered 4 Trumpet Train Horn W/ Mounting Pad, Hardware & 155 DB OutputChrome Plated Competition Series Train Horn* High Quality Trumpets* Includes:   -...
    PPR_205767
    SKU:
    PPR_205767
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Shape Options:
    Round
    Style Options:
    4 Bell
    Finish Options:
    Chrome-Plated
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $213.99 - $220.99
    Qty in Cart: 0
    Price:
    $213.99 - $220.99
    Subtotal:
  • 15.27 Inch U Shaped Air Disc Brake Rotor - TDA3218K167, R6086, 82353218K167

    15.27 Inch U Shaped Air Disc Brake Rotor - TDA3218K167, R6086, 82353218K167

    AUTOMANN USA

    $444.99
    15.27 Inch Air Disc Brake Rotors* High Quality Air Disc Rotors* 15.270 Inch Disc * Brake Shape- U Shape * Disc OD - 15.270 Inch * Overall Depth- 6.125 Inch * Hole Diameter- 0.810 Inch * Nos Hole- 10...
    29-051700016
    SKU:
    29-051700016
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    $444.99
    Qty in Cart: 0
    Price:
    $444.99
    Subtotal:
  • 16.929 Inch Hat Shape Air Disc Brake Rotor - R6206, R6206M, M44D6206, R44D6206 For Haldex DB22

    16.929 Inch Hat Shape Air Disc Brake Rotor - R6206, R6206M, M44D6206, R44D6206 For Haldex DB22

    AUTOMANN USA

    $386.99
    16.929 Inch Haldex DB22 Air Disc Rotor W/ Threaded Bolt Holes* High Quality Air Disc Rotor * 16.929 Inch * Haldex Db22 * Threaded Bolt Holes * Disc Brake Shape- Hat Shape * Disc OD - 16.929 Inch *...
    29-051700017
    SKU:
    29-051700017
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $386.99
    Qty in Cart: 0
    Price:
    $386.99
    Subtotal:
  • 15.25 Inch U Shaped Air Disc Brake Rotor 3218Z156

    15.25 Inch U Shaped Air Disc Brake Rotor 3218Z156

    AUTOMANN USA

    $449.99
    15.25 Inch Air Disc Brake Rotors* High Quality Air Disc Rotors* 15.250 Inch * Disc Brake Shape- U Shape * Disc OD - 15.250 Inch * Overall Depth- 5.75 Inch * Hole Diameter- 0.813 Inch * Nos Hole- 10 *...
    29-051700015
    SKU:
    29-051700015
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Frame & Chassis
    $449.99
    Qty in Cart: 0
    Price:
    $449.99
    Subtotal:
  • Type 30/30 Sealed Brake Chamber 3 Inch Long Stroke Welded Clevis

    Type 30/30 Sealed Brake Chamber 3 Inch Long Stroke Welded Clevis

    AUTOMANN USA

    $131.99
    Long Stroke Welded Clevis Spring Brake W/ 3 Inch Stroke LengthDepend on the Type 30/30 Sealed Brake Chamber - 3 Inch Long Stroke Welded Clevis for consistent and efficient braking. This high-quality...
    09-151700004
    SKU:
    09-151700004
    Truck Class:
    Universal
    Length Options:
    3 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $131.99
    Qty in Cart: 0
    Price:
    $131.99
    Subtotal:
  • Service Chamber W/ Type, Push Rod Length & Chamber Length Options

    Service Chamber W/ Type, Push Rod Length & Chamber Length Options

    AFTERMARKET

    $78.99 - $98.99
    Maintain confident stopping power with this service chamber built for commercial brake systems that demand reliability and precision. Available in Type 16, 20, 24, and 30 configurations with multiple...
    PPR_205993
    SKU:
    PPR_205993
    Truck Class:
    Universal
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $78.99 - $98.99
    Qty in Cart: 0
    Price:
    $78.99 - $98.99
    Subtotal:
  • 15 x 5 Inch 10 Hole Brake Drum

    15 x 5 Inch 10 Hole Brake Drum

    AFTERMARKET

    $344.99 - $467.99
    Choose the perfect 15 x 5 Inch 10 Hole Brake Drum for your heavy-duty truck with five distinct options, each designed to replace specific OEM numbers and deliver precision performance. Each with...
    PPR_205888
    SKU:
    PPR_205888
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Height Options:
    15 Inch
    Diameter Options:
    15 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $344.99 - $467.99
    Qty in Cart: 0
    Price:
    $344.99 - $467.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    5th Wheel Hook & Pull Strap Puller W/ 4 State Trucks Logo

    5th Wheel Hook & Pull Strap Puller W/ 4 State Trucks Logo

    AFTERMARKET

    Now: $14.40
    Was: $27.53
    5th Wheel Strap Puller W/ 4 State Trucks Embroidery* High Quality 5th Wheel Strap Puller * Hook And Pull* 4 State Trucks Embroidered* Collapses Down For Easy Storage* Made In USA* Sold Individually*...
    09-051100010
    SKU:
    09-051100010
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $14.40
    Was: $27.53
    Qty in Cart: 0
    Price:
    Now: $14.40
    Was: $27.53
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD 31 Inch Stainless Steel Fifth Wheel Pin Puller W/ J Hook At End

    TPHD 31 Inch Stainless Steel Fifth Wheel Pin Puller W/ J Hook At End

    TPHD

    $10.35 - $11.82
    Choose Option(s) to see description.TPHD Black 31 Inch Stainless Steel Fifth Wheel Pin Puller W/ J Hook At End31 Inch Stainless Steel Fifth Wheel Pin Puller Black W/ J Hook At End By TPHD* High...
    PPR_205773
    SKU:
    PPR_205773
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Length Options:
    31 Inch
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $10.35 - $11.82
    Qty in Cart: 0
    Price:
    $10.35 - $11.82
    Subtotal:
  • Stainless Steel Fuel Tank I-Panel For Kenworth

    Stainless Steel Fuel Tank I-Panel For Kenworth

    TWELVE GAUGE

    $662.99 - $713.99
    Choose Option(s) to see description.Fitment* Fits Kenworth T300 1995 thru 2007* Fits Kenworth T450 1993 thru 1997* Fits Kenworth T370 2009 thru 2021* Fits Kenworth T600 1986 thru 1989* Fits Kenworth...
    PPR_205833
    SKU:
    PPR_205833
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Finish Options:
    Paintable
    Finish Options:
    Polished
    Product Type:
    Fuel Tanks
    Diameter Options:
    24 1/2 Inch
    $662.99 - $713.99
    Qty in Cart: 0
    Price:
    $662.99 - $713.99
    Subtotal:
  • Merritt 22 X 21 Inch Top Opening Smooth Aluminum Saddle Box With Diamond Plate Door, No Step

    Merritt 22 X 21 Inch Top Opening Smooth Aluminum Saddle Box With Diamond Plate Door, No Step

    MERRITT

    $1,115.99 - $1,448.99
    Have equipment organized in the Merritt 22 x 21 Inch Top Opening Smooth Aluminum Saddle Box with Diamond Plate Door. Built from smooth aluminum and featuring a rugged diamond plate door, this...
    PPR_204401
    SKU:
    PPR_204401
    Truck Class:
    Universal
    Location:
    Made In USA
    Length Options:
    21 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Width Options:
    22 Inch
    Style Options:
    1 Door
    Truck Class:
    Heavy Duty
    Product Type:
    Toolboxes
    $1,115.99 - $1,448.99
    Qty in Cart: 0
    Price:
    $1,115.99 - $1,448.99
    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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