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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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  • On Sale
    Limited Quantity Available
    Shock Absorber Replaces 66634, 66893, 83203

    Shock Absorber Replaces 66634, 66893, 83203

    OPP - ORIGINAL PARTS PROGRAM

    Now: $11.70
    Was: $45.62
    Shock AbsorberCommercial Truck and Trailer shocks designed as a direct replacement for OE shocks. They designed to deliver an unbeatable ride comfort, control, and performance.* High Quality Shock...
    09-050009
    SKU:
    09-050009
    Truck Class:
    Heavy Duty
    Length Options:
    11 Inch
    Size Options:
    6 Stroke
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $11.70
    Was: $45.62
    Qty in Cart: 0
    Price:
    Now: $11.70
    Was: $45.62
    Subtotal:
  • FREE SHIPPING OVER $249
    Gabriel Shock Absorber 1.63 Inch Bore Replaces 85919, 65503

    Gabriel Shock Absorber 1.63 Inch Bore Replaces 85919, 65503

    GABRIEL

    $83.99
    Gabriel Fleetline Steer And Trailer Shock Absorber* High Quality Absorber * 1.63 Inch Bore* Collapsed Length 14.23 Inches* Extended Length 22.48 Inches* Sleeve Mounting* Sold Individually* Warranty...
    09-050004
    SKU:
    09-050004
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $83.99
    Qty in Cart: 0
    Price:
    $83.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Shock Absorber 1.63 Inch Bore Replaces 85000, 65416

    Shock Absorber 1.63 Inch Bore Replaces 85000, 65416

    OPP - ORIGINAL PARTS PROGRAM

    Now: $12.08
    Was: $51.99
    Shock AbsorberThis shock absorber features a 1.63-inch bore and is a direct replacement for Monroe numbers 65416 and 66893, as well as Gabriel number 85000. It's designed to provide reliable...
    09-050002
    SKU:
    09-050002
    Truck Class:
    Heavy Duty
    Length Options:
    12 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $12.08
    Was: $51.99
    Qty in Cart: 0
    Price:
    Now: $12.08
    Was: $51.99
    Subtotal:
  • Smooth Aluminum Wide Big Mount Step Box 18 Inch

    Smooth Aluminum Wide Big Mount Step Box 18 Inch

    ICONIC

    $729.99
    18 X 24 X 29.13 Inch Aluminum Big Mount Step Box* High Quality Big Mouth Step Box* Aluminum* Dimensions:  - 18.00 Inch Wide  - 24.00 Inch Height  - 29.13 Inch Depth* With Smooth Aluminum Lid * 50...
    09-020100537
    SKU:
    09-020100537
    Truck Class:
    Universal
    Width Options:
    18 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Product Type:
    Cargo Control
    Ready To Ship:
    Yes
    $729.99
    Qty in Cart: 0
    Price:
    $729.99
    Subtotal:
  • 22 Inch Smooth Aluminum Big Mouth Step Box W/ Lid

    22 Inch Smooth Aluminum Big Mouth Step Box W/ Lid

    ICONIC

    $759.99
    Big Mouth 22 X 24 Inch Smooth Aluminum Step Box* High Quality Step Box* Made Of Smooth Aluminum With Smooth Aluminum Lid* 22 Inch Wide* 24 Inch Height* 29.13 Inch Depth* Recommended 09-020100007...
    09-020100535
    SKU:
    09-020100535
    Truck Class:
    Universal
    Width Options:
    22 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Product Type:
    Cargo Control
    Ready To Ship:
    Yes
    $759.99
    Qty in Cart: 0
    Price:
    $759.99
    Subtotal:
  • Diamond Plate Aluminum Step Saddle Box 36 x 25 x 28 Inch W/ Polished Side/Back Panels

    Diamond Plate Aluminum Step Saddle Box 36 x 25 x 28 Inch W/ Polished Side/Back Panels

    UNITED PACIFIC

    $902.99
    Aluminum Step Saddle Box W/ Locking Latch* High Quality Step Saddle Box* Made Of Aluminum* 36 Inch Length X 25 Inch Width X 28 Inch Height * Box Can Be Opened, Closed And Locked With Key* 2 Keys Are...
    09-020100534
    SKU:
    09-020100534
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Aluminum
    Finish Options:
    Diamond Plate
    Product Type:
    Cargo Control
    $902.99
    Qty in Cart: 0
    Price:
    $902.99
    Subtotal:
  • Diamond Plate Aluminum Step Saddle Box 18 x 25 x 28 Inch W/ Polished Back/Side Panels

    Diamond Plate Aluminum Step Saddle Box 18 x 25 x 28 Inch W/ Polished Back/Side Panels

    UNITED PACIFIC

    $618.99
    Aluminum Step Saddle Box With Lockable Door And Keys* High Quality Step Saddle Box * Made Of Aluminum* 18 Inch W X 25 Inch D X 28 Inch H * Box Can Be Opened* Closed And Locked With Key* 2 Keys Are...
    09-020100532
    SKU:
    09-020100532
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Finish Options:
    Diamond Plate
    Material Options:
    Aluminum
    Product Type:
    Cargo Control
    $618.99
    Qty in Cart: 0
    Price:
    $618.99
    Subtotal:
  • Diamond Plate Aluminum Step Saddle Box 12 x 25 x 28 Inch W/ Polished Side/Back Panels

    Diamond Plate Aluminum Step Saddle Box 12 x 25 x 28 Inch W/ Polished Side/Back Panels

    UNITED PACIFIC

    $913.99
    Aluminum Step Saddle Box With Locking Door And 2 Keys* High Quality Step Saddle Box* 12 Inch L X 25 Inch W X 28 Inch * Aluminum Step* Box Can Be Opened, Closed And Locked With Key* 2 Keys Are...
    09-020100531
    SKU:
    09-020100531
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Material Options:
    Aluminum
    Finish Options:
    Diamond Plate
    Product Type:
    Cargo Control
    $913.99
    Qty in Cart: 0
    Price:
    $913.99
    Subtotal:
  • Diamond Plate Aluminum Trailer Tongue Truck Box W/ Angled Front 18.5 X 15 X 49 Inch

    Diamond Plate Aluminum Trailer Tongue Truck Box W/ Angled Front 18.5 X 15 X 49 Inch

    BUYERS PRODUCTS

    $550.99
    18.5 X 15 X 49 Inch Diamond Plate Aluminum Trailer Tongue Truck Box W/ Angled FrontThis Diamond Tread Aluminum Trailer Tongue Truck Box is built tough to mount to A-frame style trailers. It keeps...
    09-020100518
    SKU:
    09-020100518
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $550.99
    Qty in Cart: 0
    Price:
    $550.99
    Subtotal:
  • Diamond Plate Aluminum Trailer Tongue Truck Box 15 X 14.5 X 34/22.5 Inch

    Diamond Plate Aluminum Trailer Tongue Truck Box 15 X 14.5 X 34/22.5 Inch

    BUYERS PRODUCTS

    $422.99
    15 X 14.5 X 34/22.5 Inch Diamond Plate Aluminum Trailer Tongue Truck BoxThis Diamond Tread Aluminum Trailer Tongue Truck Box is built for A-frame style trailers. It's tough yet lightweight with a...
    09-020100517
    SKU:
    09-020100517
    Truck Class:
    Universal
    Make:
    Universal Items
    Material Options:
    Aluminum
    Product Type:
    Frame & Chassis
    $422.99
    Qty in Cart: 0
    Price:
    $422.99
    Subtotal:
  • Black Steel Trailer Tongue Truck Tool Box 16.38 X 15 X 35.25/21.25 Inch

    Black Steel Trailer Tongue Truck Tool Box 16.38 X 15 X 35.25/21.25 Inch

    BUYERS PRODUCTS

    $411.99
    16.38 X 15 X 35.25/21.25 Inch Black Steel Trailer Tongue Truck Tool BoxAdd more storage to your A-Frame Trailer with this Black Steel Trailer Tongue Truck Tool Box. Its heavy-duty steel construction,...
    09-020100516
    SKU:
    09-020100516
    Truck Class:
    Universal
    Color:
    Black
    Width Options:
    35 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $411.99
    Qty in Cart: 0
    Price:
    $411.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Battery Hold-Down Kit For 2 Group 30 Or Group 31 Batteries

    Battery Hold-Down Kit For 2 Group 30 Or Group 31 Batteries

    MINIMIZER

    $88.99
    Battery Hold Down Kit With Bolts, Nuts, Washer Plates, J Hookds, Flat Washers, Battery Clamps & Locking Nuts* High Quality Battery Hold Down Kit* Vent Holes Are Required When Storing Batteries In The...
    09-020100005
    SKU:
    09-020100005
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $88.99
    Qty in Cart: 0
    Price:
    $88.99
    Subtotal:
  • Minimizer Poly In-Frame Tool Box- 33.5 X 13.5 X 22 Inch

    Minimizer Poly In-Frame Tool Box- 33.5 X 13.5 X 22 Inch

    MINIMIZER

    $864.99
    33.5 X 13.5 X 22 Inch Poly Composite Between-Frame Tool Box By MinimizerEnsure dry, secure storage on your truck with the Minimizer Poly In-Frame Tool Box. Constructed from durable poly composite,...
    09-020100004
    SKU:
    09-020100004
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Toolboxes
    $864.99
    Qty in Cart: 0
    Price:
    $864.99
    Subtotal:
  • Limited Quantity Available
    Smooth Aluminum Fairing Tool Box 18 X 20 X 18 Inch With Top Chest Diamond Plate Lid

    Smooth Aluminum Fairing Tool Box 18 X 20 X 18 Inch With Top Chest Diamond Plate Lid

    ICONIC

    $589.99
    Aluminum Fairing Tool Box With Top Chest & Diamond Plate Aluminum Lid* High Quality Fairing Tool Box* With Top Chest Diamond Plate Aluminum Lid* Smooth Aluminum Body * Hasp Latch * Dimensions  - 18...
    09-020100003
    SKU:
    09-020100003
    Length Options:
    18 Inch
    Truck Class:
    Universal
    Width Options:
    18 Inch
    Material Options:
    Aluminum
    Make:
    Universal Items
    Finish Options:
    Smooth
    Product Type:
    Cargo Control
    $589.99
    Qty in Cart: 0
    Price:
    $589.99
    Subtotal:
  • 3 Inch Stroke Air Spring Cab Shock Replaces T711002, For Kenworth W900L

    3 Inch Stroke Air Spring Cab Shock Replaces T711002, For Kenworth W900L

    AFTERMARKET

    $68.99
    1.375 Inch Bore Air Spring Cab Shock* High Quality Air Spring Cab Shock* For 72 Inch Sleeper* Dust Tube* Recoil Cutoff* 1-3/8 Inch Bore* 3.00 Stroke* 8.62 Collapsed Length* 3112 Controls Rebound* 590...
    02-101402
    SKU:
    02-101402
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Exterior
    $68.99
    Qty in Cart: 0
    Price:
    $68.99
    Subtotal:
  • FREE SHIPPING OVER $249
    TPHD Height Leveling Valve Rod Linkage Kit Replaces 03-05180 03-06224 0305180 For Kenworth AG100, AG200 & AG400 Suspensions

    TPHD Height Leveling Valve Rod Linkage Kit Replaces 03-05180 03-06224 0305180 For Kenworth AG100, AG200 & AG400 Suspensions

    TPHD

    $14.04
    Adjustable Linkage Kit For Height Control Valve* High Quality Leveling Valve Rod Linkage Kit* Adjustable Linkage Kit For Height Control Valve* 18 Inch Rod With Ends And Hardware* Maximum Usable...
    02-051800K01
    SKU:
    02-051800K01
    Length Options:
    18 Inch
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $14.04
    Qty in Cart: 0
    Price:
    $14.04
    Subtotal:
  • FREE SHIPPING
    Aluminum Single Chamber Air Tank 9.5 OD X 19.5 Inch - 10 Ports For Kenworth

    Aluminum Single Chamber Air Tank 9.5 OD X 19.5 Inch - 10 Ports For Kenworth

    BESTFIT TRUCK PARTS

    $385.99
    Replacement K2392950 Single Chamber Tank W/ Side Ports* High Quality Air Tank* Single Chamber Reservoir* Made Of Aluminum* 1242 Cubic Inch Capacity* 150 PSI Working Pressure* Meets SAE J10 And FMVSS...
    02-0514006
    SKU:
    02-0514006
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Material Options:
    Aluminum
    Color:
    Black
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $385.99
    Qty in Cart: 0
    Price:
    $385.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Poly Upper Front Fairing Bushing For Kenworth T660 2008 -2017

    Poly Upper Front Fairing Bushing For Kenworth T660 2008 -2017

    AUTOMANN USA

    $26.98
    Kenworth Poly Upper Front Mount BushingKeep your Kenworth T660 front fairing properly aligned and secure with the Poly Upper Front Fairing Bushing. With dimensions of 2.671-inch length, 2.406-inch...
    02-05122005
    SKU:
    02-05122005
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $26.98
    Qty in Cart: 0
    Price:
    $26.98
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Aluminum Front Lower Side Fairing Step For Kenworth T600 AeroCab 1995-2007

    BESTfit Aluminum Front Lower Side Fairing Step For Kenworth T600 AeroCab 1995-2007

    BESTFIT TRUCK PARTS

    $118.99
    BESTfit Kenworth T600 Front Lower Step Fits Over Gas TankThis aluminum lower front side fairing step will fit your Kenworth T-600 AeroCab. Measuring 22.75 inches long and 6 inches wide, this fairing...
    02-05122000
    SKU:
    02-05122000
    Truck Class:
    Heavy Duty
    Material Options:
    Aluminum
    Make:
    Kenworth
    Product Type:
    Hood Parts & Acc.
    Ready To Ship:
    Yes
    $118.99
    Qty in Cart: 0
    Price:
    $118.99
    Subtotal:
  • Rear Step Trim Lower Panel For Kenworth T660, T680 & T700

    Rear Step Trim Lower Panel For Kenworth T660, T680 & T700

    TRUX ACCESSORIES

    $106.99
    Lower Panel For Rear Step Trim Fits KenworthAt 4 State Trucks, we offer this pair of back step lower trim panels. They are made of stainless steel and fit 2008 through 2016 Kenworth T660 models.*...
    02-0512119
    SKU:
    02-0512119
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $106.99
    Qty in Cart: 0
    Price:
    $106.99
    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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