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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.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 61.4 Inch Cross Tube Assembly Replaces 03357021300

    61.4 Inch Cross Tube Assembly Replaces 03357021300

    AFTERMARKET

    $736.99
    61.4 Inch Adjustable Cross Tube Assembly Replaces 03357021300* High Quality Cross Tube Assembly* Consists Of  - (1) Tie Rod End Driver Side - (1) Tie Rod End Passenger Side  - (1) Cross Tube* 61.4...
    29-05090157
    SKU:
    29-05090157
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $736.99
    Qty in Cart: 0
    Price:
    $736.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Bronze Bushing 1.625 OD x 1.375 ID X 4 Inch

    Bronze Bushing 1.625 OD x 1.375 ID X 4 Inch

    AUTOMANN USA

    Now: $11.24
    Was: $19.26
    4 Inch Bronze Bushing* High Quality Bronze Bushing* 4.00 Inch Length* 1.625 Inch O.D.* 1.375 Inch I.D.* Sold Individually* Warranty On Bronze Bushings Against Defects In Workmanship & Material From...
    09-05250118
    SKU:
    09-05250118
    Truck Class:
    Universal
    Material Options:
    Brass
    Diameter Options:
    4 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $11.24
    Was: $19.26
    Qty in Cart: 0
    Price:
    Now: $11.24
    Was: $19.26
    Subtotal:
  • Type 30 Service Chamber W/ 1 5/8 Inch Push Rod & Tailgate Lock

    Type 30 Service Chamber W/ 1 5/8 Inch Push Rod & Tailgate Lock

    AFTERMARKET

    $157.99
    Type 30 Service Chamber W/ 4.75 Inch Chamber & Tailgate StrokeKeep your truck's tailgate functioning flawlessly with the Type 30 Service Chamber W/ 1 5/8 Inch Push Rod & Tailgate Lock, a...
    09-05170093
    SKU:
    09-05170093
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $157.99
    Qty in Cart: 0
    Price:
    $157.99
    Subtotal:
  • 3 Hole Spring Clip, 1 X 1/4 Inch

    3 Hole Spring Clip, 1 X 1/4 Inch

    AUTOMANN USA

    $2.29 - $3.47
    Choose Option(s) to see description.3 Hole Spring Clip, 1 X 1/4 X 9.0 Inch OALSpring Clip With 8 Inch C To C Length* High Quality Spring Clip* 8.0 Inch C To C * 3-Hole Clip* Sold Individually*...
    PPR_206524
    SKU:
    PPR_206524
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $2.29 - $3.47
    Qty in Cart: 0
    Price:
    $2.29 - $3.47
    Subtotal:
  • Castellated Nut, 1-1/4 Inch

    Castellated Nut, 1-1/4 Inch

    AUTOMANN USA

    $16.18
    1-1/4 Inch -12 Thread Castle Nut* High Quality Castellated Nut* 1.25 Inch Size* 1-1/4 Inch Thickness* Used On Advance Mixer Front 20K Axle* Sold Individually* Warranty On Castellated Nuts Against...
    80-05250000
    SKU:
    80-05250000
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $16.18
    Qty in Cart: 0
    Price:
    $16.18
    Subtotal:
  • Shock Absorber Replaces 1201-8001, 2552-3002 For Kenworth, Peterbilt

    Shock Absorber Replaces 1201-8001, 2552-3002 For Kenworth, Peterbilt

    AUTOMANN USA

    $54.99
    Kenworth & Peterbilt Shock AbsorberRestore optimal suspension control with this high-quality Shock Absorber for Kenworth and Peterbilt trucks. With extended length of 9.25 inches, collapsed length of...
    29-09500005
    SKU:
    29-09500005
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Exterior
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • Pivot Bolt Kit For Hendrickson Lift Axle

    Pivot Bolt Kit For Hendrickson Lift Axle

    AFTERMARKET

    $162.99
    Lift Axle Bolt Kit* High Quality Bolt Kit* Consists Of   - (8) Cap Screw  - (8) Lock Nut   - (16) Iron Flat Washer* Made In USA* Sold Individually* Warranty On Bolt Kits Against Defects In...
    29-05250045
    SKU:
    29-05250045
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $162.99
    Qty in Cart: 0
    Price:
    $162.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Hex Head Flange Bolt 5/8-18 X 2-1/2 Inch Grade 8

    Hex Head Flange Bolt 5/8-18 X 2-1/2 Inch Grade 8

    AUTOMANN USA

    Now: $2.42
    Was: $3.45
    Grade 8 Flanged BoltBuilt for strength and precision, this Hex Head Flange Bolt features a 5/8-18 thread, 2-1/2 inch length, and Grade 8 construction. The flanged head ensures even clamping pressure...
    29-05250048
    SKU:
    29-05250048
    Material Options:
    Steel
    Truck Class:
    Universal
    Length Options:
    2 1/2 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    Now: $2.42
    Was: $3.45
    Qty in Cart: 0
    Price:
    Now: $2.42
    Was: $3.45
    Subtotal:
  • 23.75 Inch Crimped T-Rod, Poly Rotate For Kenworth AG380, Peterbilt FlexAir

    23.75 Inch Crimped T-Rod, Poly Rotate For Kenworth AG380, Peterbilt FlexAir

    AFTERMARKET

    $207.99
    T-Rod Replaces C65-6000-001, C65-6011-001* High Quality T-Rod* 23.75 Inch Length* Crimped End Design* Front Axle* Made In USA* Sold Individually* Warranty On T-Rods Against Defects In Workmanship &...
    29-05100289
    SKU:
    29-05100289
    Length Options:
    23 3/4 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $207.99
    Qty in Cart: 0
    Price:
    $207.99
    Subtotal:
  • Hex Head Flange Bolt 5/8-11 X 2-1/2 Inch Grade 8

    Hex Head Flange Bolt 5/8-11 X 2-1/2 Inch Grade 8

    AUTOMANN USA

    $2.30
    Grade 8 Flanged Bolt* High Quality Flange Bolt* 5/8 Inch Bolt Diameter* 2-1/2 Inch Bolt Length* Bolt Type- Flanged Bolts* Thread- 11* Pitch- Coarse* Grade- 8* Sold Individually* Warranty On Flange...
    29-05250047
    SKU:
    29-05250047
    Length Options:
    2 1/2 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $2.30
    Qty in Cart: 0
    Price:
    $2.30
    Subtotal:
  • Spacer Washer, 3 Inch ID

    Spacer Washer, 3 Inch ID

    AUTOMANN USA

    $13.87
    Spacer Washer Bushing For Rear Drive Air* High Quality Spacer Washer* Dimensions:  - 4.225 Inch O.D.  - 3.000 Inch I.D.  - 0.306 Inch Thickness* Sold Individually* Warranty On Spacer Washers Against...
    29-05250044
    SKU:
    29-05250044
    Diameter Options:
    3 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $13.87
    Qty in Cart: 0
    Price:
    $13.87
    Subtotal:
  • Drag Link Assembly 24.75 Inch C To C - 129858 For TAS65 Steering Gear

    Drag Link Assembly 24.75 Inch C To C - 129858 For TAS65 Steering Gear

    AFTERMARKET

    $305.99
    Drag Link With Tie Rod Ends* High Quality Drag Link* Includes:  - Passenger Side Tie Rod End  - Driver Side Tie Rod End* 24.75 Inch C To C* Used With Steering Gear* Made In USA* Sold Individually*...
    29-05090169
    SKU:
    29-05090169
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $305.99
    Qty in Cart: 0
    Price:
    $305.99
    Subtotal:
  • Hex Head Flange Bolt 5/8-18 X 2-1/4 Inch Grade 8

    Hex Head Flange Bolt 5/8-18 X 2-1/4 Inch Grade 8

    AUTOMANN USA

    $2.47
    Grade 8 Flanged Bolt* High Quality Flange Bolt* 5/8 Inch Bolt Diameter* 2-1/4 Inch Bolt Length* Flanged Bolts Bolt Type-* Thread- 18* Pitch- Fine* Grade- 8* Sold Individually* Warranty On Flange...
    29-05250046
    SKU:
    29-05250046
    Length Options:
    2 1/4 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2.47
    Qty in Cart: 0
    Price:
    $2.47
    Subtotal:
  • Bronze Bushing- 1-3/4 X 1-1/2 X 4 Inch

    Bronze Bushing- 1-3/4 X 1-1/2 X 4 Inch

    AUTOMANN USA

    $11.55
    4 Inch Bronze Bushing Replaces 22285, 22285000Extend the life of your equipment with the Bronze Bushing, 1-3/4 x 1-1/2 x 4 Inch. Built from durable bronze, it provides excellent wear resistance and...
    29-05100286
    SKU:
    29-05100286
    Material Options:
    Brass
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $11.55
    Qty in Cart: 0
    Price:
    $11.55
    Subtotal:
  • 25.12 Inch Crimped T-Rod W/ Rubber Bushings For Kenworth AG380,Peterbilt FlexAir

    25.12 Inch Crimped T-Rod W/ Rubber Bushings For Kenworth AG380,Peterbilt FlexAir

    AFTERMARKET

    $190.99
    T-Rod Crimped W/ Rubber Bush* High Quality T-Rod* 25.12 Inch Length* With Rubber Bushing * Crimped End Design* Front Axle* Made In USA* Sold Individually* Warranty On T-Rods Against Defects In...
    29-05100290
    SKU:
    29-05100290
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Length Options:
    25 Inch
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $190.99
    Qty in Cart: 0
    Price:
    $190.99
    Subtotal:
  • Rear Upper Shock Bracket Chalmer

    Rear Upper Shock Bracket Chalmer

    AFTERMARKET

    $71.99
    Chalmers Upper Shock Bracket Replaces 800154. 3516765C1Keep your Chalmers suspension aligned with the Rear Upper Shock Bracket. Measuring 2.5 inches center-to-center, it ensures an exact fit for...
    29-05100277
    SKU:
    29-05100277
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $71.99
    Qty in Cart: 0
    Price:
    $71.99
    Subtotal:
  • Castellated Nut, 1-1/8 Inch

    Castellated Nut, 1-1/8 Inch

    AUTOMANN USA

    $13.87
    1 1/8 Inch.-12 Thread Castle Nut* High Quality Castellated Nut* 1.125 InchSize * 1-5/32 Inch Thickness* TPI- 12* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship &...
    09-05250129
    SKU:
    09-05250129
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $13.87
    Qty in Cart: 0
    Price:
    $13.87
    Subtotal:
  • Castellated Nut, 7/8 Inch

    Castellated Nut, 7/8 Inch

    AUTOMANN USA

    $6.93
    7/8 Inch -14 Thread Castle Nut* High Quality Castellated Nut* 0.875 Inch Size* 29/32 Inch Thickness * TPI- 14* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship &...
    09-05250131
    SKU:
    09-05250131
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $6.93
    Qty in Cart: 0
    Price:
    $6.93
    Subtotal:
  • Castellated Nut, 3/4 Inch

    Castellated Nut, 3/4 Inch

    AUTOMANN USA

    $4.62
    3/4 Inch -16 Thread Castle Nut* High Quality Castellated Nut* 0.75 Inch Size* 13/16 Inch Thickness* TPI- 16* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship & Material...
    09-05250130
    SKU:
    09-05250130
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $4.62
    Qty in Cart: 0
    Price:
    $4.62
    Subtotal:
  • Castellated Nut, 1 Inch

    Castellated Nut, 1 Inch

    AUTOMANN USA

    $10.39
    1 Inch -14 Thread Castle Nut* High Quality Castellated Nut* 1.00 Inch Size* 1 Inch Thickness* TPI- 14* Sold Individually* Warranty On Castellated Nuts Against Defects In Workmanship & Material From...
    09-05250128
    SKU:
    09-05250128
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $10.39
    Qty in Cart: 0
    Price:
    $10.39
    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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