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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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  • Replacement Parts Kit For 890 & 890C Couplings

    Replacement Parts Kit For 890 & 890C Couplings

    PREMIER

    $840.99
    890 Series Coupling Replacement Part Kit* High Quality Replacement Parts Kit * Includes   - Drive Screw  - Retaining Rings  - Lock Nut  - Handles  - Bushing  - Pins And Cable  - Pawl  - Springs  -...
    09-051100761
    SKU:
    09-051100761
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $840.99
    Qty in Cart: 0
    Price:
    $840.99
    Subtotal:
  • Safety Pin And Cable Replacement For 335NTEL Coupling

    Safety Pin And Cable Replacement For 335NTEL Coupling

    PREMIER

    $24.39
    335NTEL Coupling Replacement Safety Pin And Cable* High Quality Safety Pin And Cable * For Use With 335NTEL Coupling* Made In USA* Sold Individually* Warranty On Safety Pin And Cables Against Defects...
    09-051100743
    SKU:
    09-051100743
    Material Options:
    Steel
    Location:
    Made In USA
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $24.39
    Qty in Cart: 0
    Price:
    $24.39
    Subtotal:
  • Left Bar Latch Lock For 240KL Hitch

    Left Bar Latch Lock For 240KL Hitch

    PREMIER

    $58.99
    Replacement Left Bar Latch Lock* High Quality Bar Latch Lock* Driver Side * For Use With 204KL Hitch* Made In USA* Sold Individually* Warranty On Bar Latch Locks Against Defects In Workmanship &...
    09-051100739
    SKU:
    09-051100739
    Location:
    Made In USA
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    Subtotal:
  • Rear Nylatron Bushing Replacement For 335NTEL Coupling

    Rear Nylatron Bushing Replacement For 335NTEL Coupling

    PREMIER

    $15.08
    335NTEL Coupling Replacement Rear Nylatron Bushing* High Quality Rear Nylatron Bushing* For Use With Coupling* Made In USA* Sold Individually* Warranty On Rear Nylatron Bushings Against Defects In...
    09-051100745
    SKU:
    09-051100745
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Nylon
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $15.08
    Qty in Cart: 0
    Price:
    $15.08
    Subtotal:
  • Spring Replacement, 5/8 x 1 5/8 Inch For Model 24 Drop Down Coupling

    Spring Replacement, 5/8 x 1 5/8 Inch For Model 24 Drop Down Coupling

    PREMIER

    $11.89
    Model 24 Drop Down Coupling Replacement Spring* High Quality Replacement Spring* 5/8 Inch X 1-5/8 Inch* For Drop Down Coupling* Use With Model 24 Drop Down Coupling* Made In USA* Sold Individually*...
    09-051100705
    SKU:
    09-051100705
    Location:
    Made In USA
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $11.89
    Qty in Cart: 0
    Price:
    $11.89
    Subtotal:
  • Pin Replacement, 5/8 x 2 15/16 Inch For Model 24 Drop Down Coupling

    Pin Replacement, 5/8 x 2 15/16 Inch For Model 24 Drop Down Coupling

    PREMIER

    $55.99
    Model 24 Drop Down Coupling Replacement Pin* High Quality Replacement Pin* 5/8 Inch X 2-15/16 Inch* For Drop Down Coupling* Use With Model 24 Drop Down Coupling* Made In USA* Sold Individually*...
    09-051100706
    SKU:
    09-051100706
    Material Options:
    Steel
    Location:
    Made In USA
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $55.99
    Qty in Cart: 0
    Price:
    $55.99
    Subtotal:
  • Replacement Locknut, 2 Inch For 207L-S-SE Drawbar Eyes

    Replacement Locknut, 2 Inch For 207L-S-SE Drawbar Eyes

    MINIMIZER

    $72.99
    Drawbar Eye 2 Inch Locknut Replacement* High Quality Locknut* 2 Inch* Made In USA* Sold Individually* Warranty On Locknuts Against Defects In Workmanship & Material From Date Of Purchase*** High...
    09-051100735
    SKU:
    09-051100735
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Brass
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $72.99
    Qty in Cart: 0
    Price:
    $72.99
    Subtotal:
  • Pin And Cable Replacement For Model 16 Coupling

    Pin And Cable Replacement For Model 16 Coupling

    PREMIER

    $232.99
    Model 16 Replacement Pin And Cable* High Quality Pin And Cable * For Pin And Clevis Coupling* Use With Model 16 Coupling Pin And Cable* Made In USA* Sold Individually* Warranty On Pin And Cables...
    09-051100700
    SKU:
    09-051100700
    Truck Class:
    Universal
    Material Options:
    Steel
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $232.99
    Qty in Cart: 0
    Price:
    $232.99
    Subtotal:
  • Handle And Lock Pin Replacement For Model 16 Coupling

    Handle And Lock Pin Replacement For Model 16 Coupling

    PREMIER

    $49.64
    Model 16 Coupling Replacement Handle And Lock Pin* High Quality Handle And Lock Pin* Includes   - Lock Pin   - Handle Tip* For Model 16 Coupling* Made In USA* Sold Individually* Warranty On Handle...
    09-051100701
    SKU:
    09-051100701
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $49.64
    Qty in Cart: 0
    Price:
    $49.64
    Subtotal:
  • Hook Replacement For Model 24 Drop Down Coupling

    Hook Replacement For Model 24 Drop Down Coupling

    PREMIER

    $166.99
    Model 24 Drop Down Coupling Replacement Hook* High Quality Replacement Hook* For Drop Down Coupling* Use With Model 24 Drop Down Coupling* Made In USA* Sold Individually* Warranty On Replacement...
    09-051100704
    SKU:
    09-051100704
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $166.99
    Qty in Cart: 0
    Price:
    $166.99
    Subtotal:
  • Replacement Spring, 9/16 x 1 Inch For Model 16 Coupling

    Replacement Spring, 9/16 x 1 Inch For Model 16 Coupling

    PREMIER

    $11.89
    Pin And Clevis Coupling Spring Replacement* High Quality Coupling Spring* 9/16 Inch X 1 Inch* For Pin And Clevis Coupling* Use With Model 16 Coupling * Made In USA* Sold Individually* Warranty On...
    09-051100699
    SKU:
    09-051100699
    Material Options:
    Steel
    Location:
    Made In USA
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $11.89
    Qty in Cart: 0
    Price:
    $11.89
    Subtotal:
  • Aluminum Deck Plate 55 x 33.5 Inch W/ Extra Large Storage Box For Freightliner

    Aluminum Deck Plate 55 x 33.5 Inch W/ Extra Large Storage Box For Freightliner

    IOWA CUSTOMS

    $2,874.99
    55 x 33.5 Inch Aluminum Deck Plate With 22 x 28 Inch Storage Box* High Quality Deck Plate* Aluminum* 55 Inch * 33.5 Inch Width* With 22 Inch x 28 Inch XLarge Storage Box* Sold Individually* Warranty...
    09-0503119
    SKU:
    09-0503119
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2,874.99
    Qty in Cart: 0
    Price:
    $2,874.99
    Subtotal:
  • Recessed Airline Box W/ Hydro-Air 7 Way Configuration

    Recessed Airline Box W/ Hydro-Air 7 Way Configuration

    IOWA CUSTOMS

    $569.99
    Iowa Customs Smooth Aluminum Recessed Airline Box With 7 Way Air Hook UpsEnhance your setup with the Iowa Customs Aluminum Recessed Airline Box! Easily hook it up to your existing slide-in rail deck...
    09-05040132
    SKU:
    09-05040132
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $569.99
    Qty in Cart: 0
    Price:
    $569.99
    Subtotal:
  • 33 X 16 Inch SS Front Drive Axle Filler Panel W/ 8 Rnd 4 Inch & 11 Rnd 3/4 Inch Light Holes

    33 X 16 Inch SS Front Drive Axle Filler Panel W/ 8 Rnd 4 Inch & 11 Rnd 3/4 Inch Light Holes

    IOWA CUSTOMS

    $822.99
    Iowa Customs 16 Inch Stainless Steel Center Panel W/ Light Hole CutoutsThe Iowa Customs Front Drive Axel Filler Panel is designed to give your vehicle a custom, filled-in look in front of the Front...
    09-01110060
    SKU:
    09-01110060
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Length Options:
    16 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $822.99
    Qty in Cart: 0
    Price:
    $822.99
    Subtotal:
  • Reciprocating 2.0 CFM Air Compressor W/ Mounting Brackets

    Reciprocating 2.0 CFM Air Compressor W/ Mounting Brackets

    UNITED PACIFIC

    $163.99
    Heavy Duty 12V Air Compressor With Steel Braided Air Hose, Wiring Harness And Mounting HardwareThe 2.0 CFM air Compressor with mounting brackets is designed for all your on-board air needs, including...
    09-05140002
    SKU:
    09-05140002
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $163.99
    Qty in Cart: 0
    Price:
    $163.99
    Subtotal:
  • Chrome Swivel Pogo Stick, 45 Inch W/ Hose Or Cable Holder

    Chrome Swivel Pogo Stick, 45 Inch W/ Hose Or Cable Holder

    UNITED PACIFIC

    $66.99
    7/8 Inch Diameter Chrome Plated Swivel PipePrevent cables and hoses from dangling on your truck deck plate with this swivel pogo stick. It is designed to support heavier ABS cables easily and comes...
    09-05500006
    SKU:
    09-05500006
    Length Options:
    45 Inch
    Diameter Options:
    7/8 Inch
    Material Options:
    Aluminum
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $66.99
    Qty in Cart: 0
    Price:
    $66.99
    Subtotal:
  • Competition Series 150 PSI Air Compressor And Tank Kit

    Competition Series 150 PSI Air Compressor And Tank Kit

    UNITED PACIFIC

    $184.99
    Heavy Duty 12V Air Compressor/Tank Kit With 2.0 CFM Compressor and 1 1/2 Gallon TankThe Competition Series 150 PSI Air Compressor And Tank Kit features a high volume reciprocating 2.0 CFM compressor...
    09-05140001
    SKU:
    09-05140001
    Rating:
    150 PSI
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $184.99
    Qty in Cart: 0
    Price:
    $184.99
    Subtotal:
  • Merritt 24 X 60 Inch Stainless Steel Tool Box Door, Replaces Split Door

    Merritt 24 X 60 Inch Stainless Steel Tool Box Door, Replaces Split Door

    MERRITT

    $1,084.99 - $1,343.99
    Replace your worn or damaged split door with the Merritt 24 x 60 Inch Stainless Steel Tool Box Door. Made from premium stainless steel, it includes robust hinges and latches for secure and easy...
    PPR_206338
    SKU:
    PPR_206338
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Stainless Steel
    Width Options:
    60 Inch
    Length Options:
    24 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Toolboxes
    $1,084.99 - $1,343.99
    Qty in Cart: 0
    Price:
    $1,084.99 - $1,343.99
    Subtotal:
  • Gabriel Cab Shock Absorber Replaces 66502 For Kenworth T680, T880 Peterbilt 348, 567, 579

    Gabriel Cab Shock Absorber Replaces 66502 For Kenworth T680, T880 Peterbilt 348, 567, 579

    AFTERMARKET

    $71.99
    Cab Shock Absorber Fits Kenworth & PeterbiltImprove ride quality and cab stability with the Gabriel Cab Shock Absorber a replacement on Kenworth T680, T880, and Peterbilt 348, 567, 579. Featuring a 7...
    29-09500004
    SKU:
    29-09500004
    Make:
    Peterbilt
    Make:
    Kenworth
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Product Type:
    Exterior
    Ready To Ship:
    Yes
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • Jost Fifth Wheel Assembly W/ 24 Inch Rails & Standard Top Plate

    Jost Fifth Wheel Assembly W/ 24 Inch Rails & Standard Top Plate

    JOST

    $2,360.99
    Standard Top Plate Fifth Wheel W/ 24 Inch Rails & 8 Inch Risers* High Quality Fifth Wheel Assembly* Includes: - 24 Inch Rails  - 8 Inch Risers  - Standard Top Plate* Made In USA* Sold Individually*...
    09-0511068
    SKU:
    09-0511068
    Truck Class:
    Heavy Duty
    Length Options:
    8 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2,360.99
    Qty in Cart: 0
    Price:
    $2,360.99
    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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