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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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  • Qty in Cart
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  • Price
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  • Aluminum Large Mouth Step Box 12 X 25 X 28 Inch

    Aluminum Large Mouth Step Box 12 X 25 X 28 Inch

    AUTOMANN USA

    $665.99
    9 Gauge Aluminum 12 X 25 X 28 Inch Step Box With Large MouthImprove storage access and durability on your rig with this premium Aluminum Large Mouth Step Box. Built from 9-gauge aluminum, this...
    09-020100550
    SKU:
    09-020100550
    Truck Class:
    Heavy Duty
    Height Options:
    25 Inch
    Width Options:
    28 Inch
    Material Options:
    Aluminum
    Length Options:
    12 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $665.99
    Qty in Cart: 0
    Price:
    $665.99
    Subtotal:
  • Steel Zinc Flat Washer - 21/32in ID X 2-1/4in OD - K220-213 For Kenworth T680

    Steel Zinc Flat Washer - 21/32in ID X 2-1/4in OD - K220-213 For Kenworth T680

    AUTOMANN USA

    $8.09
    Kenworth 1/4 Inch Thick Washer Replaces K220-213* High Quality Washer* Steel Zinc* 2-1/4 Inch Washer OD* 11/16 Inch Washer ID* Thickness- 1/4 Inch* Washer Type- Suspension Washer* Sold Individually *...
    02-05090003
    SKU:
    02-05090003
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $8.09
    Qty in Cart: 0
    Price:
    $8.09
    Subtotal:
  • Hanger Assembly For Hendrickson Turner Lift Axle

    Hanger Assembly For Hendrickson Turner Lift Axle

    AFTERMARKET

    $732.99 - $746.99
    Protect your suspension system and improve lift axle performance with the Hendrickson Turner Lift Axle Hanger Assembly. Available for driver and passenger sides, providing precise fitment and secure...
    PPR_206774
    SKU:
    PPR_206774
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $732.99 - $746.99
    Qty in Cart: 0
    Price:
    $732.99 - $746.99
    Subtotal:
  • Frame Bracket For Hendrickson Turner Lift Axle

    Frame Bracket For Hendrickson Turner Lift Axle

    AFTERMARKET

    $468.99
    Choose Option(s) to see description.Frame Bracket, Driver Side - Replaces D147861 For Hendrickson Turner Lift AxleDriver Side Frame Bracket Replaces D147861* High Quality Frame Bracket* Driver Side*...
    PPR_206773
    SKU:
    PPR_206773
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $468.99
    Qty in Cart: 0
    Price:
    $468.99
    Subtotal:
  • Z Beam Assembly, 18-1/4 Inch C-To-C For Hendrickson Turner Lift Axle

    Z Beam Assembly, 18-1/4 Inch C-To-C For Hendrickson Turner Lift Axle

    AFTERMARKET

    $318.99
    18-1/4Inch C-To-C Z Beam Assembly Replaces D0020062 , 0045562Replace worn or damaged components with the High-Quality Z Beam Assembly, 18-1/4 Inch C-To-C, designed for Hendrickson Turner lift axle...
    29-05200026
    SKU:
    29-05200026
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Trailer
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $318.99
    Qty in Cart: 0
    Price:
    $318.99
    Subtotal:
  • 65.25 Inch - 66 Inch Adjustable Cross Tube Assembly - 1-1/4 Inch-12 Ends Replaces 220TR1292

    65.25 Inch - 66 Inch Adjustable Cross Tube Assembly - 1-1/4 Inch-12 Ends Replaces 220TR1292

    AFTERMARKET

    $350.99
    65.25 Inch - 66 Inch Adjustable Cross Tube Assembly Replaces 220TR1292, A13102J3858, A13102Y3* High Quality Cross Tube* Consists Of  - Cross Tube - Driver Side Tie Rod End  - Passenger Side Tie Rod...
    29-05200016
    SKU:
    29-05200016
    Material Options:
    Steel
    Length Options:
    66 Inch
    Truck Class:
    Heavy Duty
    Make:
    Trailer
    Product Type:
    Frame & Chassis
    $350.99
    Qty in Cart: 0
    Price:
    $350.99
    Subtotal:
  • BESTfit Poly Shock Bushing For 1-3/4In OD Eye Ring With 3/4In Diameter Stud

    BESTfit Poly Shock Bushing For 1-3/4In OD Eye Ring With 3/4In Diameter Stud

    BESTFIT TRUCK PARTS

    $5.08
    BESTfit Shock Bushing Replaces E401011, CITT18197A, 5316702, 401011, 401011000, R30401011, 609474Reduce suspension wear and enhance ride stability with the BESTfit Poly Shock Bushing, compatible with...
    29-05250016
    SKU:
    29-05250016
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Diameter Options:
    3/4 Inch
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $5.08
    Qty in Cart: 0
    Price:
    $5.08
    Subtotal:
  • 17.92 Inch Adjustable Torque Rod W/ 1-1/4 In OD Shaft - Replaces 90045492

    17.92 Inch Adjustable Torque Rod W/ 1-1/4 In OD Shaft - Replaces 90045492

    AFTERMARKET

    $572.99
    17-59/64 Inch C To C Torque Rod Replaces 90045492* High Quality Torque Rod* 1-1/4 Inch Shaft Diameter* 17-59/64 Inch C To C* (2) Torque Rod Bushing* Side A And B Bushing- Straddle* Type- Simple* Made...
    29-05100217
    SKU:
    29-05100217
    Material Options:
    Steel
    Length Options:
    18 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $572.99
    Qty in Cart: 0
    Price:
    $572.99
    Subtotal:
  • 59.75 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 7QH250P2

    59.75 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 7QH250P2

    AFTERMARKET

    $235.99
    59.75 Inch C To C Cross Tube Replaces 7QH250P2, A3102K3365, 1660183* High Quality Cross Tube* 1-1/4 Inch-12 * 1.75 Inch * 59.75 Inch* Made In USA* Sold Individually* Warranty On Cross Tubes Against...
    29-05200020
    SKU:
    29-05200020
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    59 3/4 Inch
    Make:
    Trailer
    Product Type:
    Frame & Chassis
    $235.99
    Qty in Cart: 0
    Price:
    $235.99
    Subtotal:
  • Aluminum Frame Mount Steps 24 Inch By Merritt

    Aluminum Frame Mount Steps 24 Inch By Merritt

    MERRITT

    $297.99
    Aluminum 24 inch Wide Frame Mount Step With 2 StepsThe Merritt 24-inch wide bright aluminum frame mount step with 2 steps is light yet sturdy, providing easy and secure access to your Class 8 semi...
    3000
    SKU:
    3000
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Location:
    Made In USA
    Width Options:
    24 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $297.99
    Qty in Cart: 0
    Price:
    $297.99
    Subtotal:
  • Hutch Stop Bar - 48 Inch Frame W/ 46 Inch Tube

    Hutch Stop Bar - 48 Inch Frame W/ 46 Inch Tube

    AFTERMARKET

    $109.99
    Hutch Stop Bar Replaces 1164210* High Quality Stop Bar* 48 Inch Frame Width * 46 Inch Tube* Made In USA* Sold Individually* Warranty On Stop Bars Against Defects In Workmanship & Material From Date...
    29-05100223
    SKU:
    29-05100223
    Truck Class:
    Heavy Duty
    Length Options:
    46 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $109.99
    Qty in Cart: 0
    Price:
    $109.99
    Subtotal:
  • 20 Inch Fixed Torque Rod W/ 1-1/4 In OD Shaft, Driver Side

    20 Inch Fixed Torque Rod W/ 1-1/4 In OD Shaft, Driver Side

    AFTERMARKET

    $615.99
    Driver Side 20 Inch C To C Torque Rod Replaces 90045484* High Quality Torque Rod* Includes  - Torque Rod Bushing  - 8 Inch Torque Rod Bushing* 1-1/4 Inch Shaft Diameter* 20 Inch C To C* Driver Side*...
    29-05100181
    SKU:
    29-05100181
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    20 Inch
    Product Type:
    Frame & Chassis
    $615.99
    Qty in Cart: 0
    Price:
    $615.99
    Subtotal:
  • 22 Inch Sealed Torque Rod W/ 1-1/8 In OD Shaft, Non-Rebushable - Replaces 90045017

    22 Inch Sealed Torque Rod W/ 1-1/8 In OD Shaft, Non-Rebushable - Replaces 90045017

    AFTERMARKET

    $685.99
    22-1/4 Inch C To C Sealed Type Torque Rod W/ 1-1/8 Inch Diameter Shaft Replaces 90045017* High Quality Torque Rod* 1-1/8 Inch Shaft Diameter* 22-1/4 Inch C To C* Sealed Type* Non-Rebushable* Side A -...
    29-05100183
    SKU:
    29-05100183
    Truck Class:
    Heavy Duty
    Length Options:
    22 1/4 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $685.99
    Qty in Cart: 0
    Price:
    $685.99
    Subtotal:
  • Driver Side 5.625 Inch Tie Rod End W/ 1-1/8 Inch-12 Thread Replaces 132285 For TAS65 Steer Gear

    Driver Side 5.625 Inch Tie Rod End W/ 1-1/8 Inch-12 Thread Replaces 132285 For TAS65 Steer Gear

    AFTERMARKET

    $81.99
    5.625 Inch C To E Driver Side Tie Rod EndMaximize control and stability on your TAS65 steer gear with the Driver Side 5.625 Inch Tie Rod End with 1-1/8 Inch-12 Thread, designed to replace 132285...
    29-05090149
    SKU:
    29-05090149
    Length Options:
    6 5/8 Inch
    Material Options:
    Steel
    Position:
    Driver Side
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $81.99
    Qty in Cart: 0
    Price:
    $81.99
    Subtotal:
  • Tie Rod End 7.25 Inch W/ 1-1/4 Inch-18 Thread Pitch - Passenger Side

    Tie Rod End 7.25 Inch W/ 1-1/4 Inch-18 Thread Pitch - Passenger Side

    AFTERMARKET

    $54.99
    7.25 inch Center to End Tie Rod End* High Quality Tie Rod End* 7.25 Inch Center To End * Thread Pitch 1-1/4 Inch-18* Height Of Taper- 2.531 Inch* Taper Minor Diameter- 1.08 Inch* Taper Major...
    29-05090151
    SKU:
    29-05090151
    Material Options:
    Steel
    Length Options:
    7 1/4 Inch
    Position:
    Passenger Side
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • 53.54 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 970581

    53.54 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces 970581

    AFTERMARKET

    $125.99
    53.54 Inch C To C Cross Tube Replaces 970581, A3102S4543, A3102Y3847, 370044412Replace worn or damaged cross tubes with the 53.54 Inch Cross Tube. Featuring a 1.75-inch O.D., 1-1/4 Inch-12 ends, and...
    29-05090145
    SKU:
    29-05090145
    Length Options:
    53 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $125.99
    Qty in Cart: 0
    Price:
    $125.99
    Subtotal:
  • 1 Inch Cap Screw - 14 X 5-1/2 In Replaces E3240

    1 Inch Cap Screw - 14 X 5-1/2 In Replaces E3240

    AUTOMANN USA

    $20.80
    Cap Screw 1 Inch Replaces E3240* High Quality Cap Screw* 1.0Inch -14 * 5-1/2Inch Length* Sold Individually* Warranty On Cap Screws Against Defects In Workmanship & Material From Date Of Purchase***...
    29-05250023
    SKU:
    29-05250023
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Trailer
    Product Type:
    Frame & Chassis
    $20.80
    Qty in Cart: 0
    Price:
    $20.80
    Subtotal:
  • 60.875 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces A3102W2909

    60.875 Inch Cross Tube - 1.75 In OD, 1-1/4 In-12 Ends Replaces A3102W2909

    AFTERMARKET

    $179.99
    60.875 Inch C To C Cross Tube Replaces A3102W2909* High Quality Cross Tube* 1-1/4 Inch-12 I.D.* 1.75 Inch O.D.* 60.875 Inch Length* Made In USA* Sold Individually * Warranty On Cross Tubes Against...
    29-05090147
    SKU:
    29-05090147
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    61 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $179.99
    Qty in Cart: 0
    Price:
    $179.99
    Subtotal:
  • 60.56 Inch Cross Tube, 1.625 In OD, 1-1/8 In-12 Ends Replaces 140TR107

    60.56 Inch Cross Tube, 1.625 In OD, 1-1/8 In-12 Ends Replaces 140TR107

    AFTERMARKET

    $211.99
    60.56 Inch C To C Cross Tube Replaces 140TR107 1005693, 1006145* High Quality Cross Tube* 1-1/8 Inch-12 I.D.* 1.625 Inch O.D.* 60.560 Inch Length* Made In USA* Sold Individually * Warranty On Cross...
    29-05090141
    SKU:
    29-05090141
    Length Options:
    60 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $211.99
    Qty in Cart: 0
    Price:
    $211.99
    Subtotal:
  • Z Beam Assembly, 18-1/4 Inch C-To-C

    Z Beam Assembly, 18-1/4 Inch C-To-C

    AFTERMARKET

    $392.99
    18-1/4Inch C-To-C Z Beam Assembly Replaces D0020061 , 0045561The Z Beam Assembly, 18-1/4 Inch C-To-C, is built for trucks requiring robust suspension support. Its fabricated design and 18-1/4-inch...
    29-05200027
    SKU:
    29-05200027
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Trailer
    Product Type:
    Frame & Chassis
    $392.99
    Qty in Cart: 0
    Price:
    $392.99
    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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