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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
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  • FREE SHIPPING OVER $249
    BESTfit Premium Poly Bushing Replaces 90008265 For Kenworth Rear AG200, AG230, AG400 & AG460 Suspensions

    BESTfit Premium Poly Bushing Replaces 90008265 For Kenworth Rear AG200, AG230, AG400 & AG460 Suspensions

    BESTFIT TRUCK PARTS

    $92.99
    BESTfit Bushing Fits Kenworth Rear AG200, AG230, AG400 & AG460 Suspensions* High Quality Poly Bushing* Rotational With High Articulation Notched Pin* Premium Poly* Airglide 200, 46K, Adz Series* Do...
    02-051022K01
    SKU:
    02-051022K01
    Truck Class:
    Heavy Duty
    Diameter Options:
    2 Inch
    Material Options:
    Plastic/Poly
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $92.99
    Qty in Cart: 0
    Price:
    $92.99
    Subtotal:
  • FREE SHIPPING
    Aluminum Torque Rod With Bushings Replaces C65-1008 & C65-1009 For Kenworth AG-200 & AG-400 Suspensions

    Aluminum Torque Rod With Bushings Replaces C65-1008 & C65-1009 For Kenworth AG-200 & AG-400 Suspensions

    AUTOMANN USA

    $335.99
    Torque Rod With Bushings Fits Kenworth AG-200 & AG-400 Suspensions* High Quality Torque Rod* Aluminum * Dimensions:  - 20.250 Inch Length  - 4.3750 Inch Width* Straddle Type* With Bushings* Sold...
    02-051022
    SKU:
    02-051022
    Truck Class:
    Heavy Duty
    Length Options:
    20 Inch
    Make:
    Kenworth
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $335.99
    Qty in Cart: 0
    Price:
    $335.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Premium Poly Bushing Replaces 44697000 For Kenworth Rear AG100 Airglide Suspension

    BESTfit Premium Poly Bushing Replaces 44697000 For Kenworth Rear AG100 Airglide Suspension

    BESTFIT TRUCK PARTS

    $136.99
    BESTfit Bushing For Kenworth Rear AG100 AirglideKeep your Kenworth AG100 Airglide rear suspension stable, smooth, and reliable with the BESTfit Premium Poly Bushing. This high-quality replacement for...
    02-051021K01
    SKU:
    02-051021K01
    Truck Class:
    Heavy Duty
    Length Options:
    8 Inch
    Diameter Options:
    2 Inch
    Material Options:
    Plastic/Poly
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $136.99
    Qty in Cart: 0
    Price:
    $136.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminum Torque Rod W/ Bushings 19.823 X 4.375 Inch Replaces K195-472 & K195-474 For Kenworth W/ AG-200 & AG-400 Suspensions

    BESTfit Aluminum Torque Rod W/ Bushings 19.823 X 4.375 Inch Replaces K195-472 & K195-474 For Kenworth W/ AG-200 & AG-400 Suspensions

    BESTFIT TRUCK PARTS

    $224.99
    Aluminum Torque Rod W/ Bushings 19.823 X 4.375 Inch By BESTfit Replaces K195-472 & K195-474 Fits Kenworth W/ AG-200 & AG-400 SuspensionsWhen it's time to replace worn suspension components, the...
    02-051021
    SKU:
    02-051021
    Truck Class:
    Heavy Duty
    Length Options:
    19 Inch
    Make:
    Kenworth
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $224.99
    Qty in Cart: 0
    Price:
    $224.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 2.55X 5.65 Inch 4.68 Lb. Premium Poly Bushing For Kenworth

    BESTfit 2.55X 5.65 Inch 4.68 Lb. Premium Poly Bushing For Kenworth

    BESTFIT TRUCK PARTS

    $86.99
    BESTfit Premium Poly Bushing Fits KenworthBuilt for trucks that work hard, the BESTfit 2.55 X 5.65 Inch Premium Poly Bushing delivers high-performance support for Kenworth spring eye suspensions...
    02-051020K01
    SKU:
    02-051020K01
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Diameter Options:
    2 Inch
    Material Options:
    Plastic/Poly
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $86.99
    Qty in Cart: 0
    Price:
    $86.99
    Subtotal:
  • FREE SHIPPING
    BESTfit Trunnion Hanger Mount Kit Does 1 MK16917 Hanger For Kenworth AG100 Airglide 8 Bag Suspension

    BESTfit Trunnion Hanger Mount Kit Does 1 MK16917 Hanger For Kenworth AG100 Airglide 8 Bag Suspension

    BESTFIT TRUCK PARTS

    $295.99
    BESTfit Trunnion Hanger Mount Kit Fits Kenworth AG100 Airglide 8 Bag Suspension* High Quality Hanger Mount Kit* Kit Contains - 6 - 20 MM-2.5 X 90MM Bolts - 2 - 20 MM-2.5 X 130MM Bolts - 2 - 16 MM-2 X...
    02-051020
    SKU:
    02-051020
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $295.99
    Qty in Cart: 0
    Price:
    $295.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Trunnion Hanger Mount Kit Does 1 MK16913 Hanger For Kenworth AG100 Airglide 8 Bag Suspension

    BESTfit Trunnion Hanger Mount Kit Does 1 MK16913 Hanger For Kenworth AG100 Airglide 8 Bag Suspension

    BESTFIT TRUCK PARTS

    $243.99
    BESTfit Trunnion Hanger Mount Kit Fits Kenworth AG100 Airglide 8 Bag SuspensionReinforce your Kenworth AG100 Airglide 8 Bag Suspension with the BESTfit Trunnion Hanger Mount Kit, engineered to...
    02-051019
    SKU:
    02-051019
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $243.99
    Qty in Cart: 0
    Price:
    $243.99
    Subtotal:
  • 2 Inch Diameter Sway Bar For Kenworth AG100 Airglide 8 Bag Suspension

    2 Inch Diameter Sway Bar For Kenworth AG100 Airglide 8 Bag Suspension

    AFTERMARKET

    $3,341.99
    41.125 Inch Sway Bar Fits Kenworth AG100 Airglide 8 Bag Suspension* High Quality Sway Bar* 2 Inch Diameter* 41 1/8 Inch Center To Center* Sold Individually* Warranty On Sway Bar Against Defects In...
    02-051018
    SKU:
    02-051018
    Truck Class:
    Heavy Duty
    Diameter Options:
    2 Inch
    Length Options:
    41 Inch
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $3,341.99
    Qty in Cart: 0
    Price:
    $3,341.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Steel Bracket Cap For Aluminum Stabilizer Bracket For Kenworth AG100 Airglide 8 Bag Suspension

    BESTfit Steel Bracket Cap For Aluminum Stabilizer Bracket For Kenworth AG100 Airglide 8 Bag Suspension

    BESTFIT TRUCK PARTS

    $44.97
    BESTfit Bracket Cap For Aluminum Stabilizer Bracket Fits Kenworth AG100 Airglide - Replaces K071-304Reinforce your Kenworth AG100 Airglide suspension with the BESTfit Steel Bracket Cap, designed for...
    02-051017
    SKU:
    02-051017
    Truck Class:
    Heavy Duty
    Length Options:
    4 Inch
    Material Options:
    Aluminum
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $44.97
    Qty in Cart: 0
    Price:
    $44.97
    Subtotal:
  • FREE SHIPPING
    BESTfit Aluminum Stabilizer Bracket For Center Trunnion For Kenworth AG100 Airglide 8 Bag Suspension

    BESTfit Aluminum Stabilizer Bracket For Center Trunnion For Kenworth AG100 Airglide 8 Bag Suspension

    BESTFIT TRUCK PARTS

    $383.99
    BESTfit Stabilizer Bracket For Center Trunnion Fits Kenworth AG100 Airglide - Replaces K197-2943 & K197-5168The BESTfit Aluminum Stabilizer Bracket for Center Trunnion is engineered to keep your...
    02-051016
    SKU:
    02-051016
    Height Options:
    9 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $383.99
    Qty in Cart: 0
    Price:
    $383.99
    Subtotal:
  • Upper Gusset For Center Frame Support Replaces K140-2468 For Kenworth AG-200 Suspension

    Upper Gusset For Center Frame Support Replaces K140-2468 For Kenworth AG-200 Suspension

    AFTERMARKET

    $457.99
    Upper Gusset For Center Frame Support Fits Kenworth AG-200 Suspension* High Quality Upper Suspension Hanger Gusset* Fits AG200 Air Ride Suspension* Upper Support Inside The Frame From Cross Member To...
    02-051015
    SKU:
    02-051015
    Position:
    Upper
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $457.99
    Qty in Cart: 0
    Price:
    $457.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Air Spring Fits PACCAR Flex Air & Kenworth AG380 Suspensions - Replaces W01-358-8813

    BESTfit Air Spring Fits PACCAR Flex Air & Kenworth AG380 Suspensions - Replaces W01-358-8813

    BESTFIT TRUCK PARTS

    $202.99
    BESTfit Air Spring Fits PACCAR Flex Air & Kenworth AG380 SuspensionsFor reliable performance and superior load handling, the BESTfit Air Spring is ideal for PACCAR Flex Air and Kenworth AG380...
    02-051014K01
    SKU:
    02-051014K01
    Diameter Options:
    12 Inch
    Height Options:
    18 Inch
    Truck Class:
    Heavy Duty
    Rating:
    100 PSI
    Style Options:
    Rolling Lobe
    Material Options:
    Plastic/Poly
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $202.99
    Qty in Cart: 0
    Price:
    $202.99
    Subtotal:
  • Front Leaf Threaded Spring Bushing Replaces B13-1000 For Kenworth W900L

    Front Leaf Threaded Spring Bushing Replaces B13-1000 For Kenworth W900L

    AUTOMANN USA

    $21.97
    44.5 MM X 102 MM Front Leaf Threaded Spring BushingBuilt to handle demanding suspension loads, this Threaded Spring Bushing replaces B13-1000 on the Kenworth W900L. Engineered with a 44.5 mm...
    02-051013
    SKU:
    02-051013
    Diameter Options:
    1 Inch
    Length Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Size Options:
    44 mm
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $21.97
    Qty in Cart: 0
    Price:
    $21.97
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Torque Rod Replaces 44694, 44694000 & 4694-000L For Kenworth

    BESTfit Torque Rod Replaces 44694, 44694000 & 4694-000L For Kenworth

    BESTFIT TRUCK PARTS

    $136.99
    BESTfit Torque Rod - Replaces 1693060C1, 350330088, 35033201, 8079894* High Quality Torque Rod* Non-Rebushable Ends* Shaft Diameter (A) 1-1/4* Side A Straddle* Side A Bushing Non-Rebushable* Side A...
    02-051012K01
    SKU:
    02-051012K01
    Length Options:
    25 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $136.99
    Qty in Cart: 0
    Price:
    $136.99
    Subtotal:
  • Leaf Spring Shackle Kit Rear Of Front For Kenworth

    Leaf Spring Shackle Kit Rear Of Front For Kenworth

    AUTOMANN USA

    $242.99
    Rear Of Front Leaf Spring Shackle Kit Fits KenworthEnsure maximum reliability in your Kenworth suspension system with the Rear Of Front Leaf Spring Shackle Kit. Crafted from premium materials, this...
    02-051012
    SKU:
    02-051012
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    $242.99
    Qty in Cart: 0
    Price:
    $242.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 7.406 Inch OAL Premium Poly Bushing For Rear AG210L & AG400L Air Suspensions

    BESTfit 7.406 Inch OAL Premium Poly Bushing For Rear AG210L & AG400L Air Suspensions

    BESTFIT TRUCK PARTS

    $65.99
    BESTfit 5.688 Inch Center To Center Bushing Fits Kenworth* High Quality Poly Bushing* AG210L & AG400L Air Suspensions* Bushing (Type 1) Silent Block* Bushing (Type 2) Straddle Lip Type* Sleeve Type...
    02-0510111K01
    SKU:
    02-0510111K01
    Diameter Options:
    2 Inch
    Length Options:
    7 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • Threaded Shackle Spring Replaces K179378, 6262, B656008 For Kenworth W900

    Threaded Shackle Spring Replaces K179378, 6262, B656008 For Kenworth W900

    AFTERMARKET

    $54.99
    Threaded Shackle Spring Fits Kenworth W900* High Quality Shackle Spring Pin* Threaded* Sold Individually* Warranty On Shackle Spring Pins Against Defects In Workmanship & Material From Date Of...
    02-051011
    SKU:
    02-051011
    Truck Class:
    Heavy Duty
    Style Options:
    Thread On
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Height Control Valve Hadley Type Replaces TTN12144, 1670556C91, 574696C91, 20QE3126 & 20QE3126P2 For Kenworth

    Height Control Valve Hadley Type Replaces TTN12144, 1670556C91, 574696C91, 20QE3126 & 20QE3126P2 For Kenworth

    HADLEY

    $78.99
    Height Control Valve Can Replace New Or Old Delco Cab Or Chassis Valve* High Quality Control Valve* Includes 2 Levers And 2 Mounting Brackets* Fittings Not Included* Can Replace Old Or New Delco Cab...
    02-051010K01
    SKU:
    02-051010K01
    Truck Class:
    Heavy Duty
    Style Options:
    Hadley Style
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $78.99
    Qty in Cart: 0
    Price:
    $78.99
    Subtotal:
  • BESTfit 24 Inch Torque Rod Replaces K195375, K195C374, 358010004 For Kenworth

    BESTfit 24 Inch Torque Rod Replaces K195375, K195C374, 358010004 For Kenworth

    BESTFIT TRUCK PARTS

    $178.99
    BESTfit 24 Inch Torque Rod Fits KenworthEnsure reliable suspension support for your Kenworth truck with the BESTfit 24 Inch Torque Rod. Measuring 24 inches from center to center, this high-quality...
    02-051010
    SKU:
    02-051010
    Length Options:
    24 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $178.99
    Qty in Cart: 0
    Price:
    $178.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Torque Arm Mount Bracket Replaces K055-405 For Kenworth AG100 Suspension

    BESTfit Torque Arm Mount Bracket Replaces K055-405 For Kenworth AG100 Suspension

    BESTFIT TRUCK PARTS

    $49.26
    BESTfit Torque Arm Mount Bracket Fits KenworthRestore the performance and reliability of your Kenworth AG100 suspension with the BESTfit Torque Arm Mount Bracket Replacing K055-405. Designed for...
    02-051009
    SKU:
    02-051009
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Length Options:
    4 1/2 Inch
    $49.26
    Qty in Cart: 0
    Price:
    $49.26
    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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