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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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  • Stainless Steel Low Profile Air Line Box With Single Electric & 2 Air Cutouts By CSM

    Stainless Steel Low Profile Air Line Box With Single Electric & 2 Air Cutouts By CSM

    CHROME SHOP MAFIA

    $410.99
    Low Profile SS Airline Box By Chrome By Chrome Shop Mafia* High Quality Airline Box* Stainless Steel* Single Electric And 2-Air* Made In USA* Sold Individually * Warranty On Airline Boxs Against...
    09-05040146
    SKU:
    09-05040146
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $410.99
    Qty in Cart: 0
    Price:
    $410.99
    Subtotal:
  • 24 Inch Stainless Steel Coffin Style Air Line Box Kit With Two 7-Way Plugs by CSM

    24 Inch Stainless Steel Coffin Style Air Line Box Kit With Two 7-Way Plugs by CSM

    CHROME SHOP MAFIA

    $479.99
    24 Inch SS 18 Inch Coffin Style Air Line Box Kit With Air & Electrical Fittings By Chrome Shop Mafia* High Quality Air Line Box Kit* Includes:  - (2) 7-Way Plugs  - (2) Bulkhead Fittings  - (2) Male...
    09-0504002K01
    SKU:
    09-0504002K01
    Material Options:
    Stainless Steel
    Length Options:
    24 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $479.99
    Qty in Cart: 0
    Price:
    $479.99
    Subtotal:
  • Stainless Steel Surface Mount Air Line Box Kit With 7-Way Plugs by CSM

    Stainless Steel Surface Mount Air Line Box Kit With 7-Way Plugs by CSM

    CHROME SHOP MAFIA

    $457.99
    SS Air Line Box Kit With Air & Electrical Fittings By Chrome Shop Mafia* High Quality Air Line Box Kit* Includes:  - (1) 7-Way Plug  - (2) Bulkhead Fittings  - (2) Male Quick Couplers  - (2) Female...
    09-0504301K01
    SKU:
    09-0504301K01
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $457.99
    Qty in Cart: 0
    Price:
    $457.99
    Subtotal:
  • 18 Inch Stainless Steel Coffin Style Air Line Box Kit With 7-Way Plugs by CSM

    18 Inch Stainless Steel Coffin Style Air Line Box Kit With 7-Way Plugs by CSM

    CHROME SHOP MAFIA

    $481.99
    18 Inch SS 18 Inch Coffin Style Air Line Box Kit With Air & Electrical Fittings By Chrome Shop MafiaNeed a sleek and durable solution for your truck's deck plate? Check out the 18 Inch Air Line Box...
    09-0504001K01
    SKU:
    09-0504001K01
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Length Options:
    18 Inch
    Make:
    Universal Items
    $481.99
    Qty in Cart: 0
    Price:
    $481.99
    Subtotal:
  • Mesh Sabertooth Blue Bug Screen W/ White Teeth For Kenworth

    Mesh Sabertooth Blue Bug Screen W/ White Teeth For Kenworth

    ROBERT JAMES ENTERPRISES

    $180.99
    Mesh Sabertooth Bug Screen W/ Vinyl Trim By Robert James* High Quality Bug Screen* Mesh And Vinyl* Blue * White Teeth* Made In USA* Sold Individually * Warranty On Bug Screens Against Defects In...
    02-120175608080
    SKU:
    02-120175608080
    Material Options:
    Vinyl
    Truck Class:
    Light Duty
    Location:
    Made In USA
    Product Type:
    Hood Parts & Acc.
    Make:
    Kenworth
    $180.99
    Qty in Cart: 0
    Price:
    $180.99
    Subtotal:
  • Steer Axle Lowering Kit 13.54 Compressed & 20.8 Extended Inch Length Shock Absorber For Kenworth

    Steer Axle Lowering Kit 13.54 Compressed & 20.8 Extended Inch Length Shock Absorber For Kenworth

    4 STATE TRUCKS

    $591.99
    Steer Axle Lowering Kit 10.375 X 4 Inch U Bolt Fits KenworthCustomize the stance of your Kenworth with this Steer Axle Lowering Kit, designed to lower the front of the truck while allowing you to use...
    02-05090040
    SKU:
    02-05090040
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $591.99
    Qty in Cart: 0
    Price:
    $591.99
    Subtotal:
  • SS Frame Mount Steps 12 Inch

    SS Frame Mount Steps 12 Inch

    VALLEY CHROME PLATING

    $213.99
    12 Inch SS Steps With Chrome Steel Sides By Valley ChromeAccess the frame area of your truck with ease using 12-inch truck frame steps! Simple to install and designed for practicality, these steps...
    09-050515
    SKU:
    09-050515
    Length Options:
    12 Inch
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $213.99
    Qty in Cart: 0
    Price:
    $213.99
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  • Diamond Plated Aluminum Step Box With Gaiter Door & Air Shock By Sturdy-Lite

    Diamond Plated Aluminum Step Box With Gaiter Door & Air Shock By Sturdy-Lite

    STURDY-LITE

    $738.99 - $815.99
    Choose Option(s) to see description.Sturdy-Lite 24 Inch Diamond Plated Aluminum Step Box With Gator Door & Air ShockSturdy-Lite 24 Inch Diamond Plated Aluminum Step Box* High Quality Step Box* 24...
    PPR_298998
    SKU:
    PPR_298998
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $738.99 - $815.99
    Qty in Cart: 0
    Price:
    $738.99 - $815.99
    Subtotal:
  • Leaf Spring Repair Plates With No Center Hole

    Leaf Spring Repair Plates With No Center Hole

    AFTERMARKET

    $110.99 - $127.99
    Choose Option(s) to see description.Leaf Spring Repair Plate 2.76 X 0.472 X 66 Inch OAL W/ 6.5 Inch ArchSpring Steel Repair Plate With No Center Hole* High Quality Repair Plate* Dimensions:  - 2.75...
    PPR_298959
    SKU:
    PPR_298959
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $110.99 - $127.99
    Qty in Cart: 0
    Price:
    $110.99 - $127.99
    Subtotal:
  • 4 X 6 Inch 1 Degree Aluminum Shim Wedge

    4 X 6 Inch 1 Degree Aluminum Shim Wedge

    AUTOMANN USA

    $24.28
    Shim Wedge 1 Degree- 4 Inch X 6 InchEnsure accurate suspension adjustments with the 4 x 6 Inch 1 Degree Aluminum Shim Wedge. Crafted from strong aluminum, this 4 x 6-inch wedge offers a precise...
    30-05090012
    SKU:
    30-05090012
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Bus
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $24.28
    Qty in Cart: 0
    Price:
    $24.28
    Subtotal:
  • Rear Alignment Eccentric Collar For Blue Bird, HIno

    Rear Alignment Eccentric Collar For Blue Bird, HIno

    BESTFIT TRUCK PARTS

    $18.50
    Hendrickson Eccentric Alignment Collar Replaces 64096, 64096000, 64096-000, 64632, 64632000, 64632-000This eccentric alignment collar has a 3.7-inch outer diameter and a 1.234-inch inner diameter. It...
    29-05100341
    SKU:
    29-05100341
    Truck Class:
    Heavy Duty
    Material Options:
    Brass
    Make:
    Hino
    Make:
    Bus
    Product Type:
    Frame & Chassis
    $18.50
    Qty in Cart: 0
    Price:
    $18.50
    Subtotal:
  • Gabriel HD Fleetline Cab Shock Absorber Replaces 83081 For Kenworth, Peterbilt

    Gabriel HD Fleetline Cab Shock Absorber Replaces 83081 For Kenworth, Peterbilt

    GABRIEL

    $48.18
    Gabriel HD Fleetline Kenworth Peterbilt Cab Shock Absorber 83081Trust the Gabriel HD Fleetline Cab Shock Absorber to keep your Kenworth or Peterbilt cab stable under heavy loads. Boasting a 9.98-inch...
    29-10140002
    SKU:
    29-10140002
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Make:
    Universal Items
    Make:
    Peterbilt
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    $48.18
    Qty in Cart: 0
    Price:
    $48.18
    Subtotal:
  • Trunnion Bushing 3.5 ID X 4.5 OD X 3.5 Inch

    Trunnion Bushing 3.5 ID X 4.5 OD X 3.5 Inch

    AUTOMANN USA

    $13.98
    Trunnion Bushing E1334, R301334, 91008040, TA802A, And 15875* High Quality Trunnion Bushing* Dimensions:  - 3.5 Inch ID   - 4.5 Inch OD   - 3.5 Inch Length* Sold Individually* Warranty On Trunnion...
    29-05250050
    SKU:
    29-05250050
    Truck Class:
    Heavy Duty
    Diameter Options:
    3 1/2 Inch
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $13.98
    Qty in Cart: 0
    Price:
    $13.98
    Subtotal:
  • 5 3/4 Inch End Beam Bushing Assembly For Hendrickson 480-520 Series

    5 3/4 Inch End Beam Bushing Assembly For Hendrickson 480-520 Series

    AFTERMARKET

    $180.99
    Hendrickson End Beam Bushing Assembly* High Quality End Beam Bushing Assembly* Consists Of   - (1) End Beam Bushing   - (1) Adapter Kit* 5 3/4 Inch* Made In USA* Sold Individually* Warranty On End...
    29-05100284
    SKU:
    29-05100284
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $180.99
    Qty in Cart: 0
    Price:
    $180.99
    Subtotal:
  • 5 3/4 Inch Poly End Beam Bushing Assembly For Hendrickson 340-460 Series

    5 3/4 Inch Poly End Beam Bushing Assembly For Hendrickson 340-460 Series

    AFTERMARKET

    $201.99
    OEM Style Hendrickson End Beam Bushing Assembly* High Quality End Beam Bushing Assembly* 5-3/4 Inch Bushing* Sold Individually* Warranty On End Beam Bushing Assemblies Against Defects In Workmanship...
    29-05100260
    SKU:
    29-05100260
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $201.99
    Qty in Cart: 0
    Price:
    $201.99
    Subtotal:
  • Universal Joint Strap Kit For SPL170X Driveshaft

    Universal Joint Strap Kit For SPL170X Driveshaft

    AUTOMANN USA

    $24.18
    Universal Joint Strap Kit Replaces 2500674C91. 1707018X. 3947699* High Quality Joint Strap Kit* 0.984 Inch Length Bolt* Torque To 100-120 Lb.Ft* Sold Individually* Warranty On Joint Strap Kits...
    29-05210004
    SKU:
    29-05210004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $24.18
    Qty in Cart: 0
    Price:
    $24.18
    Subtotal:
  • Poly V Steer Bushing 15 ID X 2.5 OD X 3.25 Inch OAL

    Poly V Steer Bushing 15 ID X 2.5 OD X 3.25 Inch OAL

    AFTERMARKET

    $65.99
    V Steer Bushing Replaces 90008203* High Quality V Steer Bushing* Poly* Dimensions:  - 1.5 Inch ID   - 2.5 Inch OD   - 3.25 Inch Overall Length* Sold Individually* Warranty On V Steer Bushings Against...
    29-05250049
    SKU:
    29-05250049
    Material Options:
    Plastic/Poly
    Diameter Options:
    1 1/2 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • Concentric Alignment Collar For Blue Bird, HIno

    Concentric Alignment Collar For Blue Bird, HIno

    BESTFIT TRUCK PARTS

    $18.50
    Concentric Collar Replaces E15716, 64097000, 64633000, 646633000, R3015716* High Quality Concentric Collar* Dimensions:  - 3.70 Inch Overall Outer Diameter  - 1.044 Inch Tube Height  - 1.234 Inch...
    29-05100342
    SKU:
    29-05100342
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Bus
    Make:
    Hino
    Product Type:
    Frame & Chassis
    $18.50
    Qty in Cart: 0
    Price:
    $18.50
    Subtotal:
  • 5 3/4 Inch End Beam Bushing Assembly For Hendrickson 463 and 503 Series

    5 3/4 Inch End Beam Bushing Assembly For Hendrickson 463 and 503 Series

    AFTERMARKET

    $170.99
    End Beam Bushing Assembly Hendrickson* High Quality End Beam Bushing Assembly* Consists Of   - (1) End Beam Bushing   - (1) Adapter Kit* 5 3/4 Inch* Made In USA* Sold Individually* Warranty On End...
    29-05100283
    SKU:
    29-05100283
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $170.99
    Qty in Cart: 0
    Price:
    $170.99
    Subtotal:
  • 5 3/4 Inch Poly Rear End Beam Bushing Assembly For Hendrickson 340-460 Series

    5 3/4 Inch Poly Rear End Beam Bushing Assembly For Hendrickson 340-460 Series

    AFTERMARKET

    $200.99
    Hendrickson 5 3/4 Inch Poly End Beam Bushing Assembly* High Quality End Beam Bushing Assembly* Includes:  - (1) End Beam Bushing  - (1) Adapter Kit* Made Of Polycarbonate * Bushing Dimensions:  -...
    29-05100259
    SKU:
    29-05100259
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $200.99
    Qty in Cart: 0
    Price:
    $200.99
    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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