null

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
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 24 Inch Down Glow Kit With 3/4 Inch Dual Revolution Lights Amber - Red LED / Clear Lens

    24 Inch Down Glow Kit With 3/4 Inch Dual Revolution Lights Amber - Red LED / Clear Lens

    IOWA CUSTOMS

    $786.99
    24 Inch Down Glow Kit With 3/4 Inch Dual Revolution Lights* High Quality Down Glow Kit* 24 Inch* Made Of #8 304 Polished Stainless Steel* 3/4 Inch Dual Revolution Lights* Amber To Red LED/ Clear...
    09-1611111
    SKU:
    09-1611111
    Product Type:
    Lighting
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Location:
    Made In USA
    Color:
    Amber/Red
    $786.99
    Qty in Cart: 0
    Price:
    $786.99
    Subtotal:
  • Holland Fifth Wheel Top Plate Replaces XA351ALP

    Holland Fifth Wheel Top Plate Replaces XA351ALP

    OPP - ORIGINAL PARTS PROGRAM

    $1,851.99
    Fontaine Bolt Kit for 24 Inch Sliding Mount* High Quality Fifth Wheel Top Plate* Cast Steel* Dimensions:  - 4 3/4 Inch Height  - 36 1/2 Inch Width   - 35 1/2 Inch Length  - 2 Inch Kingpin* Lock...
    09-05110206
    SKU:
    09-05110206
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Width Options:
    36 1/2 Inch
    Height Options:
    4 3/4 Inch
    Length Options:
    35 1/2 Inch
    Material Options:
    Steel
    $1,851.99
    Qty in Cart: 0
    Price:
    $1,851.99
    Subtotal:
  • Billet Aluminum Double Frame Clamps For Mounting Glow Light Brackets

    Billet Aluminum Double Frame Clamps For Mounting Glow Light Brackets

    IOWA CUSTOMS

    $98.99
    Billet Frame Clamp For Mounting Under Body Glow Light BracketsThese billet frame clamps make installing underbody glow lights easy. Made from high-quality billet aluminum, they fit perfectly and...
    09-16100113
    SKU:
    09-16100113
    Material Options:
    Aluminum
    Product Type:
    Lighting
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Location:
    Made In USA
    $98.99
    Qty in Cart: 0
    Price:
    $98.99
    Subtotal:
  • Rubber Shackle and Shock Bushing Replaces K066026, K066266

    Rubber Shackle and Shock Bushing Replaces K066026, K066266

    GABRIEL

    $5.08
    Harris Bushing* High Quality Bushing* Dimensions:  - Bushing I.D.- 0.625 Inch  - Bushing O.D.- 1.875 Inch  - Overall Length- 1.25 Inch* S-Monroe Mount* Bushing Type 1- Rubber Shackle And Shock...
    29-05250042
    SKU:
    29-05250042
    Length Options:
    1 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $5.08
    Qty in Cart: 0
    Price:
    $5.08
    Subtotal:
  • Wear Pad Washer Replaces 1167680B000 For Ridewell Trailer

    Wear Pad Washer Replaces 1167680B000 For Ridewell Trailer

    AUTOMANN USA

    $8.09
    Ridewell Wear Pad Washer* High Quality Wear Pad Washer * Plastic/Nylon* Dimensions:  - I.D.- 2.12 Inch  - Thickness- 0.187 Inch  - O.D.- 6.25 Inch* Sold Individually* Warranty On Wear Pad Washer S...
    29-05250034
    SKU:
    29-05250034
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Material Options:
    Nylon
    Make:
    Trailer
    Make:
    Universal Items
    $8.09
    Qty in Cart: 0
    Price:
    $8.09
    Subtotal:
  • Thrust Washer L225 Reyco Replaces 4712

    Thrust Washer L225 Reyco Replaces 4712

    AUTOMANN USA

    $37.10
    Thrust Washer L225 Reyco* High Quality Thrust Washer* Dimensions:  - 4.00 Inch Length  - 3.75 Inch Width  - 0.25 Inch Thick* Sold Individually* Warranty On Washers Against Defects In Workmanship &...
    29-05200031
    SKU:
    29-05200031
    Length Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Width Options:
    3 Inch
    Make:
    Universal Items
    $37.10
    Qty in Cart: 0
    Price:
    $37.10
    Subtotal:
  • Spigot Cap Type 1 Replaces 800201, E9571, 3578484C1, R309571 For Chalmers

    Spigot Cap Type 1 Replaces 800201, E9571, 3578484C1, R309571 For Chalmers

    AFTERMARKET

    $54.99
    Chalmers Spigot Cap* High Quality Spigot Cap Chalmers* Made In USA* Sold Individually* Warranty On Spigot Cap Chalmers Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    29-05100250
    SKU:
    29-05100250
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Make:
    Trailer
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • 1/8 Inch Spacer Plate for Chalmers Suspensions Replaces 800056. 1515958C1

    1/8 Inch Spacer Plate for Chalmers Suspensions Replaces 800056. 1515958C1

    AUTOMANN USA

    $8.05
    Spacer Plate 1/8in Chalmers* High Quality Spacer Plate* Dimensions:  - Length C To C- 6.875 Inch  - Width C To C- 3.25 Inch  - Thickness- 0.115 Inch* Sold Individually* Warranty On Spacer Plates...
    29-05100294
    SKU:
    29-05100294
    Truck Class:
    Heavy Duty
    Length Options:
    6 Inch
    Width Options:
    3 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $8.05
    Qty in Cart: 0
    Price:
    $8.05
    Subtotal:
  • Restrictor Can Chalmers Replaces 373015, E4687, R304687

    Restrictor Can Chalmers Replaces 373015, E4687, R304687

    AFTERMARKET

    $173.99
    Restrictor Can Chalmers* High Quality Restrictor* Dimensions:  - 0.134In Thickness   - 11.19In Od   - 4.38In High* Made In USA* Sold Individually* Warranty On Restrictors Against Defects In...
    29-05100236
    SKU:
    29-05100236
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Make:
    Trailer
    Make:
    Universal Items
    $173.99
    Qty in Cart: 0
    Price:
    $173.99
    Subtotal:
  • Torque Rod Bushing Chalmers Replaces 1115937. 800010. E7766. 1016720R4

    Torque Rod Bushing Chalmers Replaces 1115937. 800010. E7766. 1016720R4

    AUTOMANN USA

    $26.96
    Torque Rod Bushing Chalmers* High Quality Torque Rod Bushing* Dimensions:  - Length- 4.20 Inch  - O.D.- 4.25 Inch And 3.688 Inch  - I.D.- 2.563 Inch* Sold Individually* Warranty On Torque Rod...
    29-05100177
    SKU:
    29-05100177
    Product Type:
    Frame & Chassis
    Length Options:
    4 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $26.96
    Qty in Cart: 0
    Price:
    $26.96
    Subtotal:
  • Top Plate Cast Replaces E2873, E9553, 2004671, 796205C1 For Reyco

    Top Plate Cast Replaces E2873, E9553, 2004671, 796205C1 For Reyco

    AFTERMARKET

    $57.99
    Top Plate Cast for Reyco* High Quality Top Plate* Dimensions:  - Length- 7.812 Inch  - Width- 3.00 Inch  - Hole Diameter- 1.125 Inch* Made In USA* Sold Individually* Warranty On Top Plates Against...
    29-05100165
    SKU:
    29-05100165
    Length Options:
    7 Inch
    Width Options:
    3 Inch
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Diameter Options:
    1 1/4 Inch
    Make:
    Trailer
    Make:
    Universal Items
    $57.99
    Qty in Cart: 0
    Price:
    $57.99
    Subtotal:
  • Spacer Hendrickson Replaces E-3741, 48903, 48903-000, R303741

    Spacer Hendrickson Replaces E-3741, 48903, 48903-000, R303741

    AUTOMANN USA

    $26.59
    Spacer Hendrickson* High Quality Spacer* Dimensions:  - Length- 7.875 Inch  - Width- 3.00 Inch  - Thickness- 1.57 Inch* Sold Individually* Warranty On Spacers Against Defects In Workmanship &...
    29-05100214
    SKU:
    29-05100214
    Length Options:
    7 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Width Options:
    3 Inch
    Make:
    Universal Items
    $26.59
    Qty in Cart: 0
    Price:
    $26.59
    Subtotal:
  • Auxiliary Spring Hendrickson Replaces 65902-003, 65902003

    Auxiliary Spring Hendrickson Replaces 65902-003, 65902003

    AFTERMARKET

    $144.99
    Auxiliary Spring Hendrickson* High Quality Auxiliary Spring* 2-1/8 Inch Height* Made In USA* Sold Individually* Warranty On Auxiliary Springs Against Defects In Workmanship & Material From Date Of...
    29-05100122
    SKU:
    29-05100122
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Height Options:
    2 Inch
    Make:
    Universal Items
    $144.99
    Qty in Cart: 0
    Price:
    $144.99
    Subtotal:
  • Rebound Bump Stop Hendrickson Replaces E-9416, 49395, 49395-000, NM1881, R309416

    Rebound Bump Stop Hendrickson Replaces E-9416, 49395, 49395-000, NM1881, R309416

    AUTOMANN USA

    $26.60
    Rebound Bump Stop HendricksonReduce suspension stress and enhance ride comfort with this Hendrickson Rebound Bump Stop. Replacement for E-9416, 49395, 49395-000, NM1881, and R309416, it measures 4...
    29-05100135
    SKU:
    29-05100135
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Width Options:
    2 Inch
    Make:
    Universal Items
    $26.60
    Qty in Cart: 0
    Price:
    $26.60
    Subtotal:
  • Auxiliary Spring Hendrickson/ Aux Replaces E-14896, 67778, 67778-000

    Auxiliary Spring Hendrickson/ Aux Replaces E-14896, 67778, 67778-000

    AFTERMARKET

    $172.99
    Ds Auxiliary Spring Hendrickson/ Aux* High Quality Auxiliary Spring* Height- 4.218 Inch* Made In USA* Sold Individually* Warranty On Auxiliary Springs Against Defects In Workmanship & Material From...
    29-05100124
    SKU:
    29-05100124
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    Height Options:
    4 Inch
    Make:
    Universal Items
    $172.99
    Qty in Cart: 0
    Price:
    $172.99
    Subtotal:
  • U-Bolt Plate 3-1/2 Inch Replaces R309613

    U-Bolt Plate 3-1/2 Inch Replaces R309613

    AUTOMANN USA

    $8.09
    U-Bolt Plate 3-1/2 Inch* High Quality U-Bolt Plate* Dimensions:  - C To C- 3.50 Inch  - Thickness- 0.50 Inch  - 2 Holes- 0.685 Inch* 2 Holes- 0.685 Inch* Sold Individually* Warranty On U-Bolt Plates...
    29-05090041
    SKU:
    29-05090041
    Length Options:
    3 Inch
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    $8.09
    Qty in Cart: 0
    Price:
    $8.09
    Subtotal:
  • Spring Riser-Spacer Block 6 X 3 X 1.5 Inch With 0.77 Inch Hole Underneath

    Spring Riser-Spacer Block 6 X 3 X 1.5 Inch With 0.77 Inch Hole Underneath

    AFTERMARKET

    $53.99
    1.5 Inch Lift Block- Spacer Plate For 3 Inch Springs* High Quality Spring Riser Block* Dimensions:   - Length- 6.00 Inch  - Width- 3.00 Inch  - Height- 1.50 Inch  - Hole Underneath- 0.77 Inch* Made...
    09-05090020
    SKU:
    09-05090020
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Length Options:
    6 Inch
    Width Options:
    3 Inch
    Height Options:
    1 1/2 Inch
    Make:
    Universal Items
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • Spring Riser-Spacer Block 6 X 3 X 2-3/8 Inch With 3/4 Inch Center Post, 0.77 Inch Hole Underneath

    Spring Riser-Spacer Block 6 X 3 X 2-3/8 Inch With 3/4 Inch Center Post, 0.77 Inch Hole Underneath

    AFTERMARKET

    $91.99
    2 3/8 Inch Lift Block- Spacer Plate For 3 Inch SpringsMaintain truck stability and performance with this Spring Riser-Spacer Block, designed to reinforce and elevate leaf springs for heavy-duty...
    09-05090022
    SKU:
    09-05090022
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Width Options:
    3 Inch
    Length Options:
    6 Inch
    Make:
    Universal Items
    $91.99
    Qty in Cart: 0
    Price:
    $91.99
    Subtotal:
  • Spring Riser-Spacer Block 7 X 2.5 X 1 Inch W/ 5/8 Inch Center Post

    Spring Riser-Spacer Block 7 X 2.5 X 1 Inch W/ 5/8 Inch Center Post

    AUTOMANN USA

    $20.81
    1 Inch Lift Block- Spacer Plate For 2.5 Inch Springs* High Quality Spring Riser Block* Dimensions:  - 7.0In Lg.  - 2-1/2In Wd.   - 1.0In Thk* With 5/8In Center Post* Sold Individually* Warranty On...
    09-05090058
    SKU:
    09-05090058
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Width Options:
    2 Inch
    Length Options:
    7 Inch
    Make:
    Universal Items
    $20.81
    Qty in Cart: 0
    Price:
    $20.81
    Subtotal:
  • Spring Riser-Spacer Block 7 X 3 X 1 Inch With 9/16 Inch Center Post

    Spring Riser-Spacer Block 7 X 3 X 1 Inch With 9/16 Inch Center Post

    BESTFIT TRUCK PARTS

    $28.10
    Leveling Lift Block* High Quality Spring Riser Block* Dimensions:  - 7.0 Inch Length   - 3.00 Inch Width  - 1.0 Inch Thick* With 9/16 Inch Center Post* Sold Individually* Warranty On Spring Riser...
    09-05090015
    SKU:
    09-05090015
    Product Type:
    Frame & Chassis
    Truck Class:
    Heavy Duty
    Width Options:
    3/4 Inch
    Length Options:
    7 Inch
    Make:
    Universal Items
    $28.10
    Qty in Cart: 0
    Price:
    $28.10
    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.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!