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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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  • Quantity
  • Price
  • Subtotal
  • Rear Step Trim Upper Panel For Kenworth T660, T680 & T700

    Rear Step Trim Upper Panel For Kenworth T660, T680 & T700

    TRUX ACCESSORIES

    $109.99
    Upper Panel For Rear Step Trim Fits KenworthAt 4 State Trucks, we offer this pair of back step upper trim panels. They are made of stainless steel and fit 2008 through 2016 Kenworth T660 models.*...
    02-0512118
    SKU:
    02-0512118
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $109.99
    Qty in Cart: 0
    Price:
    $109.99
    Subtotal:
  • Stainless Steel Front Lower Scuff Panels For Kenworth T660

    Stainless Steel Front Lower Scuff Panels For Kenworth T660

    PHOENIX DESIGN

    $158.99
    Stainless Steel Front Lower Kick Panels Fit Kenworth T660* High Quality Lower Upper Scuff Panel * Made Of 304 Stainless Steel * Sold As Pair* Made In USA* Warranty On Lower Upper Scuff Panel Against...
    02-051200008
    SKU:
    02-051200008
    Truck Class:
    Heavy Duty
    Position:
    Front
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $158.99
    Qty in Cart: 0
    Price:
    $158.99
    Subtotal:
  • Stainless Steel Front Upper Scuff Panels For Kenworth T660

    Stainless Steel Front Upper Scuff Panels For Kenworth T660

    PHOENIX DESIGN

    $114.99
    Stainless Steel Front Upper Kick Panels Fit Kenworth T660* High Quality Front Upper Scuff Panel * Made Of 304 Stainless Steel * Sold As Pair* Made In USA* Warranty On Front Upper Scuff Panel Against...
    02-051200007
    SKU:
    02-051200007
    Truck Class:
    Heavy Duty
    Position:
    Front
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $114.99
    Qty in Cart: 0
    Price:
    $114.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    FREE SHIPPING OVER $249
    430 Stainless Steel Rear Upper Step Kick Plates For Kenworth T660, T680, T700 - Pair

    430 Stainless Steel Rear Upper Step Kick Plates For Kenworth T660, T680, T700 - Pair

    UNITED PACIFIC

    Now: $27.45
    Was: $84.75
    SS Rear Upper Step Kick Plates* High Quality Kick Plate* Made Of 430 Stainless Steel* For Rear Upper Step * Includes:  - (2) Kick Plates  - Hardware  - 3M Two Sided Tape* Warranty On Kick Plates...
    02-051200002
    SKU:
    02-051200002
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $27.45
    Was: $84.75
    Qty in Cart: 0
    Price:
    Now: $27.45
    Was: $84.75
    Subtotal:
  • BESTfit 24 Inch Torque Rod For Kenworth Rear AG100 Air Glide

    BESTfit 24 Inch Torque Rod For Kenworth Rear AG100 Air Glide

    BESTFIT TRUCK PARTS

    $171.99
    BESTfit Kenworth Poly Advanced Terex 24 Inch Torque RodEnsure smooth handling and suspension integrity on your Kenworth Rear AG100 Air Glide with the BESTfit 24 Inch Torque Rod. Engineered for...
    02-051063
    SKU:
    02-051063
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $171.99
    Qty in Cart: 0
    Price:
    $171.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Bump Stop Replaces 01-52865 For Kenworth AG400L Suspensions

    BESTfit Bump Stop Replaces 01-52865 For Kenworth AG400L Suspensions

    BESTFIT TRUCK PARTS

    $71.99
    BESTfit AG400L Bump Stop Mounts To Frame Fits Kenworth* High Quality Bumper Stop* Mounts To Frame* Stops Suspension Spring Travel* Sold Individually* Warranty On Bumper Stop Against Defects In...
    02-051058K02
    SKU:
    02-051058K02
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Barksdale Type Replacement Leveling Valve Kit For Kenworth AG400L Suspension

    BESTfit Barksdale Type Replacement Leveling Valve Kit For Kenworth AG400L Suspension

    BESTFIT TRUCK PARTS

    $138.99
    BESTfit AG400L Suspension Leveling Valve Kit - Includes Mounting Bracket & Hardware* High Quality Leveling Valve Kit* Barksdale Type Replacement* HCV Kit* Non Delay* 1/4 Inch NPT* 2 Supply Port*...
    02-051056K01
    SKU:
    02-051056K01
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $138.99
    Qty in Cart: 0
    Price:
    $138.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Round U-Bolt Kit 365MM X 84MM X 22-1.5MM Replaces 03-08693-365 For Kenworth AG400L

    BESTfit Round U-Bolt Kit 365MM X 84MM X 22-1.5MM Replaces 03-08693-365 For Kenworth AG400L

    BESTFIT TRUCK PARTS

    $77.99
    BESTfit 22-1.5MM Round U-Bolt Kit Fits Kenworth AG400L Suspension* High Quality U-Bolt Kit* Kit Includes:  - (2) U Bolts (Round Bend)  - 14.37 Inch Overall Length  - 3.62 Inch Of M55 - 1.5 Thread  -...
    02-051055K01
    SKU:
    02-051055K01
    Truck Class:
    Heavy Duty
    Width Options:
    3 Inch
    Height Options:
    14 Inch
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $77.99
    Qty in Cart: 0
    Price:
    $77.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 8.04 Inch OAL Air Spring Stud Replaces 27-01746 For Kenworth AG400L Suspension

    BESTfit 8.04 Inch OAL Air Spring Stud Replaces 27-01746 For Kenworth AG400L Suspension

    BESTFIT TRUCK PARTS

    $9.35
    BESTfit AG400L Suspension Air Spring Stud* High Quality Air Spring Stud* Dimensions:  - 8.040 Inch Overall Length  - 1.750 Inch 1/2 Inch - 13 Thread On One End  - 1.830 Inch 1/2 Inch - 13 Thread On...
    02-051054K01
    SKU:
    02-051054K01
    Diameter Options:
    1/2 Inch
    Truck Class:
    Heavy Duty
    Length Options:
    8 Inch
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $9.35
    Qty in Cart: 0
    Price:
    $9.35
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 8.125 Inch U-Bolt Saddle Replaces 03-08712 For Kenworth AG400L Suspension

    BESTfit 8.125 Inch U-Bolt Saddle Replaces 03-08712 For Kenworth AG400L Suspension

    BESTFIT TRUCK PARTS

    $82.99
    BESTfit 6.625 Inch C-C U-Bolt Seat Fits Kenworth AG400L SuspensionMaintain the safety and performance of your Kenworth AG400L suspension with the BESTfit 8.125 Inch U-Bolt Saddle. Designed for low...
    02-051053K01
    SKU:
    02-051053K01
    Length Options:
    8 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $82.99
    Qty in Cart: 0
    Price:
    $82.99
    Subtotal:
  • FREE SHIPPING
    BESTfit Aluminum Rear Suspension Hanger Replaces C11-6089 For Kenworth AG400L

    BESTfit Aluminum Rear Suspension Hanger Replaces C11-6089 For Kenworth AG400L

    BESTFIT TRUCK PARTS

    $360.99
    BESTfit Aluminum Front Of Rear Suspension Hanger Fits Kenworth AG400LThe BESTfit Aluminum Rear Suspension Hanger is a high-quality replacement part for Kenworth AG400L trucks, engineered for strength...
    02-051052K01
    SKU:
    02-051052K01
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $360.99
    Qty in Cart: 0
    Price:
    $360.99
    Subtotal:
  • FREE SHIPPING
    BESTfit Rear Suspension Hanger Replaces 01-52743, C11-1124 & 04088CA For Kenworth AG400L

    BESTfit Rear Suspension Hanger Replaces 01-52743, C11-1124 & 04088CA For Kenworth AG400L

    BESTFIT TRUCK PARTS

    $659.99
    BESTfit Front Of Rear Suspension Hanger Fits Kenworth AG400L SuspensionRestore your Kenworth AG400L suspension to peak performance with the BESTfit Rear Suspension Hanger. Built to replace 01-52743,...
    02-051051K01
    SKU:
    02-051051K01
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $659.99
    Qty in Cart: 0
    Price:
    $659.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 1/16 Inch Thick X 5.688 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTfit 1/16 Inch Thick X 5.688 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $9.35
    BESTfit 1/16 Inch Thick Torque Rod Shim Fits Kenworth AG380 - Replaces 3624480C1, 65640002 & 66299002Ensure precise alignment and optimal suspension performance on your Kenworth AG380 with the...
    02-051050K01
    SKU:
    02-051050K01
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $9.35
    Qty in Cart: 0
    Price:
    $9.35
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 1/8 Inch Thick X 5.688 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTfit 1/8 Inch Thick X 5.688 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $9.35
    BESTfit 1/8 Inch Thick Torque Rod Shim Fits Kenworth AG380 - Replaces 3624481C1 & 66299003The BESTfit 1/8 Inch Thick X 5.688 Inch C to C Torque Rod Shim ensures Kenworth AG380 owners maintain...
    02-051049K01
    SKU:
    02-051049K01
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $9.35
    Qty in Cart: 0
    Price:
    $9.35
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 1/32 Inch Thick X 5.688 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTfit 1/32 Inch Thick X 5.688 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $9.35
    BESTfit 1/32 Inch Thick Torque Rod Shim Fits Kenworth AG380 - Replaces 03-08782-001, 3624479C1 & 66299001Maintain optimal torque rod alignment and suspension integrity on your Kenworth AG380 with the...
    02-051048K01
    SKU:
    02-051048K01
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $9.35
    Qty in Cart: 0
    Price:
    $9.35
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit U-Bolt Kit 7/8 X 5.125 X 13.5 Inch For Kenworth AG380 Suspension

    BESTfit U-Bolt Kit 7/8 X 5.125 X 13.5 Inch For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $64.99
    BESTfit 0.875 Inch Thick X 5.125 X 13.5 Inch U-Bolt Kit Includes 4 Washers & 4 NutsThe BESTfit U-Bolt Kit 7/8 X 5.125 X 13.5 Inch is engineered to provide Kenworth AG380 owners with superior...
    02-051047K01
    SKU:
    02-051047K01
    Truck Class:
    Heavy Duty
    Length Options:
    13 Inch
    Width Options:
    5 Inch
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $64.99
    Qty in Cart: 0
    Price:
    $64.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 0.063 Inch Thick X 4.375 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTfit 0.063 Inch Thick X 4.375 Inch C To C Torque Rod Shim For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $7.04
    BESTfit 0.063 Inch Thick Torque Rod Shim Replaces OF47457, 49689, 8020329Keep your Kenworth AG380 suspension performing at its best with the BESTfit 0.063 Inch Thick X 4.375 Inch C to C Torque Rod...
    02-051046K01
    SKU:
    02-051046K01
    Truck Class:
    Heavy Duty
    Length Options:
    4 Inch
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $7.04
    Qty in Cart: 0
    Price:
    $7.04
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 24.625 Inch C-C Rear Torque Rod Replaces C65-6000-002 & C65-6011-002 For Kenworth AG380 Suspension

    BESTfit 24.625 Inch C-C Rear Torque Rod Replaces C65-6000-002 & C65-6011-002 For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $233.99
    BESTfit Rear Torque Rod Fits Kenworth AG380 Suspension* High Quality Torque Rod Shim* Rear * 24 5/8 Inch Center To Center* Sold Individually* Warranty On Torque Rod Shim Against Defects In...
    02-051045K01
    SKU:
    02-051045K01
    Length Options:
    24 Inch
    Truck Class:
    Heavy Duty
    Position:
    Rear
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $233.99
    Qty in Cart: 0
    Price:
    $233.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 23.75 Inch C-C Front Torque Rod Replaces C65-6000-001 & C65-6011-001 For Kenworth AG380 Suspension

    BESTfit 23.75 Inch C-C Front Torque Rod Replaces C65-6000-001 & C65-6011-001 For Kenworth AG380 Suspension

    BESTFIT TRUCK PARTS

    $233.99
    BESTfit Front Torque Rod Fits Kenworth AG380 Suspension* High Quality Torque Rod Shim* Front* 23 3/4 Inch Center To Center* Sold Individually* Warranty On Torque Rod Shim Against Defects In...
    02-051044K01
    SKU:
    02-051044K01
    Position:
    Front
    Length Options:
    23 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $233.99
    Qty in Cart: 0
    Price:
    $233.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit 5.0625 Inch OAL Air Spring Stud Replaces 03-02425, 27-00173, D8400-7754 & HWC07754 For Kenworth AG380

    BESTfit 5.0625 Inch OAL Air Spring Stud Replaces 03-02425, 27-00173, D8400-7754 & HWC07754 For Kenworth AG380

    BESTFIT TRUCK PARTS

    $8.25
    BESTfit Air Spring Stud For Kenworth AG380 SuspensionEnsure dependable air spring support on your Kenworth AG380 with the BESTfit 5.0625 Inch OAL Air Spring Stud. This high-quality stud measures at 5...
    02-051043K01
    SKU:
    02-051043K01
    Truck Class:
    Heavy Duty
    Diameter Options:
    1/2 Inch
    Length Options:
    5 Inch
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $8.25
    Qty in Cart: 0
    Price:
    $8.25
    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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