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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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  • Castellated Nut, 3/8 Inch

    Castellated Nut, 3/8 Inch

    AUTOMANN USA

    $1.93
    3/8 Inch -24 Thread Castle Nut* High Quality Castellated Nut* 0.375 Inch Size* 13/32 Inch Thickness* TPI- 24* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship & Material...
    09-05250127
    SKU:
    09-05250127
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1.93
    Qty in Cart: 0
    Price:
    $1.93
    Subtotal:
  • Tapered Roll Pin, 1.281 Inch.

    Tapered Roll Pin, 1.281 Inch.

    AUTOMANN USA

    $2.53
    Tapered Brake Shoe Roll Pin* High Quality Tapered Pin* Length- 1.281 Inch. * O.D.- 0.190 Inch And 0.185 Inch* Used On Eaton Drive Axle 16-1/2 Inch X 7 Inch* Sold Individually* Warranty On Tapered...
    09-05170295
    SKU:
    09-05170295
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2.53
    Qty in Cart: 0
    Price:
    $2.53
    Subtotal:
  • Passenger Side Bend Air Fitting Replaces G381012R For Kenworth Rear Airglide

    Passenger Side Bend Air Fitting Replaces G381012R For Kenworth Rear Airglide

    AFTERMARKET

    $112.99
    Air Fitting Replaces D20422559, FG25591. FG6258, G38-1012RRestore proper air flow in your Kenworth Rear Airglide suspension with the Passenger Side Bend Air Fitting. Designed to use Fitting #16 at...
    02-05100009
    SKU:
    02-05100009
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $112.99
    Qty in Cart: 0
    Price:
    $112.99
    Subtotal:
  • Air Bag Adapter For Kenworth Rear Airglide

    Air Bag Adapter For Kenworth Rear Airglide

    AFTERMARKET

    $68.99
    Kenworth Air Bag Adapter Replaces D20422493. D2042-2493. Fg2493Ensure consistent air bag performance on your Kenworth Rear Airglide suspension with this durable and reliable Air Bag Adapter. Built...
    02-05100010
    SKU:
    02-05100010
    Diameter Options:
    1/2 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $68.99
    Qty in Cart: 0
    Price:
    $68.99
    Subtotal:
  • Driver Side Air Brake Fitting For Kenworth Rear Airglide

    Driver Side Air Brake Fitting For Kenworth Rear Airglide

    AFTERMARKET

    $112.99
    Air Fitting- Driver Side Replaces G381012, D20422556Restore your Kenworth's braking reliability with this precision-engineered Driver Side Air Brake Fitting. Replacing G381012 and D20422556 and...
    02-05100008
    SKU:
    02-05100008
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $112.99
    Qty in Cart: 0
    Price:
    $112.99
    Subtotal:
  • Driver Side Air Bag Adapter For Kenworth

    Driver Side Air Bag Adapter For Kenworth

    AFTERMARKET

    $88.99
    Air Bag Adapter- Driver SideUpgrade your Kenworth's air suspension with this Driver Side Air Bag Adapter, built to provide secure, reliable connections. Equipped with a 1-5/16 Inch-12 thread and JIC...
    02-05100007
    SKU:
    02-05100007
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $88.99
    Qty in Cart: 0
    Price:
    $88.99
    Subtotal:
  • 16 Inch Cross Tube, 1.5 Inch OD For Kenworth

    16 Inch Cross Tube, 1.5 Inch OD For Kenworth

    AFTERMARKET

    $283.99
    Cross Tube Replaces K162-588, J20-1002, L24VT8445A11* High Quality Cross Tube* Dimensions: - 1-1/8 Inch-12  - 1.50 Inch OD - 16 Inch Length* Made In USA* Sold Individually* Warranty On Cross Tubes...
    02-05090019
    SKU:
    02-05090019
    Length Options:
    16 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $283.99
    Qty in Cart: 0
    Price:
    $283.99
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  • TPHD 3.5 X 4 X 36 Inch Fifth Wheel Ramps With 4 Inch Rise

    TPHD 3.5 X 4 X 36 Inch Fifth Wheel Ramps With 4 Inch Rise

    TPHD

    $319.99
    Heavy Duty Steel Standard Fifth Wheel Frame Ramps- 3.5 X 4 X 36 Inch By TPHD* High Quality Fifth Wheel Ramps* Steel* Dimensions: - 3.50 Inch Wide - 4.00 Inch Height - 36.00 Inch Length* 4 Inch Rise*...
    09-0511073
    SKU:
    09-0511073
    Material Options:
    Steel
    Length Options:
    36 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $319.99
    Qty in Cart: 0
    Price:
    $319.99
    Subtotal:
  • Air Suspension System W/ Low Frequency Air Springs & Height Control Valve For Kenworth T600A, T800 & W900B

    Air Suspension System W/ Low Frequency Air Springs & Height Control Valve For Kenworth T600A, T800 & W900B

    OPP - ORIGINAL PARTS PROGRAM

    $1,370.99
    Kenworth Air Suspension SystemThe Cabmate fits most Kenworth T600A, T660, T800A, and W900B Series models with standard duty rear cab crossmembers. Avoid using it on aftermarket trucks with sleepers...
    02-0950003
    SKU:
    02-0950003
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $1,370.99
    Qty in Cart: 0
    Price:
    $1,370.99
    Subtotal:
  • Air Suspension System For Kenworth T600A, T660, T800A, W900B

    Air Suspension System For Kenworth T600A, T660, T800A, W900B

    OPP - ORIGINAL PARTS PROGRAM

    $1,730.99
    Kenworth Air Suspension SystemGet your Kenworth T600A, T660, T800A, and W900B series trucks fitted with the versatile CABMATE. Designed for trucks with a severe duty rear cab crossmember, it's your...
    02-0950004
    SKU:
    02-0950004
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $1,730.99
    Qty in Cart: 0
    Price:
    $1,730.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Offset Top Bellow Mounting Plate For Load-Share Air Ride Kit

    Offset Top Bellow Mounting Plate For Load-Share Air Ride Kit

    LOAD-SHARE SUSPENSIONS

    Now: $71.39
    Was: $101.99
    Offset Top Bellow Mounting Plate* High Quality Mounting Plates * Offset * For Air Ride Kit* Sold Individually* Warranty On Mounting Plates Against Defects In Workmanship & Material From Date Of...
    29-050919
    SKU:
    29-050919
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $71.39
    Was: $101.99
    Qty in Cart: 0
    Price:
    Now: $71.39
    Was: $101.99
    Subtotal:
  • CSM 304 Stainless Steel Rear Edge Trim On Side Fairing W/ 6 Round 3/4 Inch Light Holes, 2 PC Set For Kenworth T680 Next Gen

    CSM 304 Stainless Steel Rear Edge Trim On Side Fairing W/ 6 Round 3/4 Inch Light Holes, 2 PC Set For Kenworth T680 Next Gen

    CHROME SHOP MAFIA

    $130.99
    Stainless Steel Driver/Passenger Side Fairing Trim W/ 6 Round 3/4 Inch Light Holes By Chrome Shop Mafia Fits Kenworth T680 Next GenEnhance the look of your Kenworth T680 Gen II (2022-current) with...
    02-05122011
    SKU:
    02-05122011
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $130.99
    Qty in Cart: 0
    Price:
    $130.99
    Subtotal:
  • CSM 304 Stainless Steel Lower Kick Panel Trim On Side Fairing, 2 PC For Kenworth T680NG

    CSM 304 Stainless Steel Lower Kick Panel Trim On Side Fairing, 2 PC For Kenworth T680NG

    CHROME SHOP MAFIA

    $83.99
    Kenworth T680 SS Exterior Lower Kick Panel Trim On Side Fairing By Chrome Shop MafiaThis set includes two stainless steel lower kick panel trims designed specifically for the side fairings of the...
    02-05122010
    SKU:
    02-05122010
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $83.99
    Qty in Cart: 0
    Price:
    $83.99
    Subtotal:
  • Locking Pawl Replacement For 690L Coupling

    Locking Pawl Replacement For 690L Coupling

    PREMIER

    $215.99
    690L Coupling Replacement Locking Pawl* High Quality Locking Pawl* For 690L Coupling* Made In USA* Sold Individually* Warranty On Locking Pawls Against Defects In Workmanship & Material From Date Of...
    09-051100757
    SKU:
    09-051100757
    Material Options:
    Steel
    Truck Class:
    Universal
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $215.99
    Qty in Cart: 0
    Price:
    $215.99
    Subtotal:
  • Front Nylatron Bushing Replacement For 335NTEL Coupling

    Front Nylatron Bushing Replacement For 335NTEL Coupling

    PREMIER

    $15.08
    335NTEL Coupling Replacement Front Nylatron Bushing* High Quality Front Nylatron Bushing * For Use With Coupling* Made In USA* Sold Individually* Warranty On Front Nylatron Bushings Against Defects...
    09-051100744
    SKU:
    09-051100744
    Material Options:
    Nylon
    Truck Class:
    Universal
    Location:
    Made In USA
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $15.08
    Qty in Cart: 0
    Price:
    $15.08
    Subtotal:
  • Retaining Rings Replacement For Model 24 Drop Down Coupling

    Retaining Rings Replacement For Model 24 Drop Down Coupling

    PREMIER

    $4.28
    Model 24 Drop Down Coupling Replacement Retaining Rings* High Quality Retaining Ring* 5/8 Inch* Includes 2 Retaining Clips* Use With Model 24 Drop Down Coupling* Made In USA* Sold Individually*...
    09-051100707
    SKU:
    09-051100707
    Material Options:
    Steel
    Truck Class:
    Universal
    Diameter Options:
    5/8 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $4.28
    Qty in Cart: 0
    Price:
    $4.28
    Subtotal:
  • Drive Screw Replacement For Model 16 Coupling

    Drive Screw Replacement For Model 16 Coupling

    PREMIER

    $6.45
    Model 16 Coupling Replacement Drive Screw* High Quality Drive Screw* For Pin And Clevis Coupling* Use With Model 16 Coupling* Made In USA* Sold Individually* Warranty On Drive Screws Against Defects...
    09-051100702
    SKU:
    09-051100702
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $6.45
    Qty in Cart: 0
    Price:
    $6.45
    Subtotal:
  • Rubber Bushing Replacement, 4 3/4 Inch OD x 5 3/16 Inch x 2 1/2 Inch ID For 546R, 556R Front End Housing

    Rubber Bushing Replacement, 4 3/4 Inch OD x 5 3/16 Inch x 2 1/2 Inch ID For 546R, 556R Front End Housing

    MINIMIZER

    $93.99
    546R/556R Front End Replacement Rubber Bushing* High Quality Bushing* 4-3/4 Inch OD * 5-3/16 Inch Length* 2-1/2 Inch Id* For Use With 546R And 556R Front End Housing* Made In USA* Sold Individually*...
    09-051100830
    SKU:
    09-051100830
    Location:
    Made In USA
    Material Options:
    Rubber
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    Subtotal:
  • Replacement Bushing 1 1/4 x 1 5/8 Inch For 690L Coupling

    Replacement Bushing 1 1/4 x 1 5/8 Inch For 690L Coupling

    PREMIER

    $21.56
    690L Coupling Bushing Replacement* High Quality Replacement Bushing* 1-1/4 Inch X 1-5/8 Inch* For 690L Coupling Bushing* Made In USA* Sold Individually* Warranty On Replacement Bushings Against...
    09-051100755
    SKU:
    09-051100755
    Location:
    Made In USA
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $21.56
    Qty in Cart: 0
    Price:
    $21.56
    Subtotal:
  • Replacement Bolt & Lock Nut Kit For 690L Coupling

    Replacement Bolt & Lock Nut Kit For 690L Coupling

    PREMIER

    $123.99
    690L Coupling Replacement Bolt And Lock Nut* High Quality Replacement Parts Kit * Includes  - Bolt   - Lock Nut* For 690L Coupling* Made In USA* Sold Individually* Warranty On Replacement Parts Kits...
    09-051100754
    SKU:
    09-051100754
    Location:
    Made In USA
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $123.99
    Qty in Cart: 0
    Price:
    $123.99
    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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