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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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  • Price
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  • Air Disc Brake Pads Replaces 8556-D1438

    Air Disc Brake Pads Replaces 8556-D1438

    AFTERMARKET

    $165.99
    Choose Option(s) to see description.Air Disc Brake Pads Severe Duty - 8556-D1438Severe Duty Air Disc Brake Pads* High Quality Air Disc Brake Pads* Made Of Semi Metallic Material* Severe Duty*...
    PPR_205891
    SKU:
    PPR_205891
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $165.99
    Qty in Cart: 0
    Price:
    $165.99
    Subtotal:
  • 1/4 Inch Push Lock Connect Collar Accessory Pack - Choose Color

    1/4 Inch Push Lock Connect Collar Accessory Pack - Choose Color

    AUTOMANN USA

    $1.62 - $2.71
    Choose Option(s) to see description.1/4 Inch PLC Collar Accessory Pack - TanTan Air Solenoid 1/4 Inch Push Lock Connect Collars - 10 Pack* High Quality Air Solenoid Valve Accessory Collar* 1/4 Inch...
    PPR_205810
    SKU:
    PPR_205810
    Diameter Options:
    1/4 Inch
    Truck Class:
    Universal
    Material Options:
    Nylon
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1.62 - $2.71
    Qty in Cart: 0
    Price:
    $1.62 - $2.71
    Subtotal:
  • Cap Screw 1/2in-20 X 2-1/2 Inch Grade 8

    Cap Screw 1/2in-20 X 2-1/2 Inch Grade 8

    AUTOMANN USA

    $2.29
    Grade 8 Hex Bolt Replaces 2700279010 And 1735301* High Quality Cap Screw* 2-1/2 Inch Length * 1/2 Inch -20 Threads* Grade- 8* Spring* Fine Pitch* Bolt Type- Hex Bolt* Sold Individually* Warranty On...
    29-05250000
    SKU:
    29-05250000
    Length Options:
    2 1/2 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2.29
    Qty in Cart: 0
    Price:
    $2.29
    Subtotal:
  • Nylon Brake Camshaft Bushing 1.50 ID X 1.85 OD X 1.70 Inch

    Nylon Brake Camshaft Bushing 1.50 ID X 1.85 OD X 1.70 Inch

    AUTOMANN USA

    $5.08
    Nylon Brake Camshaft Bushing Replaces E2551, 1225X804, And 28-1260* High Quality Camshaft Bushing * Nylon* Dimensions: - 1.50 Inch ID  - 1.85 Inch OD  - 1.70 Inch Length* Early Meritor Trailer Axle*...
    29-05170002
    SKU:
    29-05170002
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Diameter Options:
    1 1/2 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $5.08
    Qty in Cart: 0
    Price:
    $5.08
    Subtotal:
  • Front Axle Cup Adapter 0.807 ID X 2 Inch - 90001349 For AD130 Series W/ Thru Bolt Connection

    Front Axle Cup Adapter 0.807 ID X 2 Inch - 90001349 For AD130 Series W/ Thru Bolt Connection

    AFTERMARKET

    $100.99
    Front Axle Cup Adapter Replaces 90001349* High Quality Adapter* AD130 Series With Axle Thru Bolt Connection* Dimensions:  - 2.00 Inch Overall Height  - 0.807 Inch Diameter Bolt Hole  - 2.50 Inch...
    29-05100057
    SKU:
    29-05100057
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Diameter Options:
    7/8 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Height Options:
    2 Inch
    $100.99
    Qty in Cart: 0
    Price:
    $100.99
    Subtotal:
  • Round U-Bolt Kit 3/4 In-16 X 4in X 11.375 Inch Grade 8

    Round U-Bolt Kit 3/4 In-16 X 4in X 11.375 Inch Grade 8

    AFTERMARKET

    $34.17
    3/4 Inch Diameter Rounded Top U-Bolt KitSecure your heavy-duty truck's suspension with the Round U-Bolt Kit, constructed with 3/4 In-16 X 4in X 11.375 Inch Grade 8 U-bolts. Includes two round bend...
    29-05100025
    SKU:
    29-05100025
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Make:
    Bus
    Make:
    Kenworth
    Product Type:
    Frame & Chassis
    $34.17
    Qty in Cart: 0
    Price:
    $34.17
    Subtotal:
  • Hex Cap Screw 1/2 In -13 X 5-1/2 Inch Grade 8

    Hex Cap Screw 1/2 In -13 X 5-1/2 Inch Grade 8

    AUTOMANN USA

    $3.45
    5-1/2 Inch Long Hex Cap Screw With Coarse Pitch* High Quality Cap Screw* Dimensions: - 1/2 Inch Bolt Diameter  - 5-1/2 Inch Length* Hex Bolt Type * Thread- 13* Pitch- Coarse* Grade- 8* Sold...
    29-05100003
    SKU:
    29-05100003
    Material Options:
    Steel
    Length Options:
    5 1/2 Inch
    Truck Class:
    Heavy Duty
    Product Type:
    Frame & Chassis
    $3.45
    Qty in Cart: 0
    Price:
    $3.45
    Subtotal:
  • Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 969056R9, 10QH248P4

    Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 969056R9, 10QH248P4

    AFTERMARKET

    $51.99
    5.75 Inch Tie Rod End W/ 1-1/4 Inch Rod OD* High Quality Tie Rod End* Dimensions: - 1-1/4 Inch Rod OD - 5.75 Inch Center To End - 2.638 Inch Height Of Taper - 7/8 Inch- 14 Stud Thread* Thread Pitch...
    29-05090025
    SKU:
    29-05090025
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • Self Steer Axle Tie Rod End 5.375 -02-205-0003-00

    Self Steer Axle Tie Rod End 5.375 -02-205-0003-00

    AFTERMARKET

    $98.99
    5.375 Inch Center To End Self Steer Axle Tie Rod End* High Quality Tie Rod End* Dimensions: - 5.375 Inch Center To End - 3.25 Inch Height Of Taper* Self Steer Axle* Made In USA* Sold Individually*...
    29-05090027
    SKU:
    29-05090027
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $98.99
    Qty in Cart: 0
    Price:
    $98.99
    Subtotal:
  • Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Driver Side- A3144M533, R230074

    Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Driver Side- A3144M533, R230074

    AFTERMARKET

    $275.99
    10.50 Inch Center To End Tie Rod End W/ 4.331 Inch Drop* High Quality Tie Rod End* 1-5/8 Inch Rod OD* 10.50 Inch Center To End* 2.634 Inch Height Of Taper* Taper Minor Diameter- 0.967 Inch* Taper...
    29-05090024
    SKU:
    29-05090024
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $275.99
    Qty in Cart: 0
    Price:
    $275.99
    Subtotal:
  • Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 2452861

    Tie Rod End 5.75 Inch 1-1/4 OD Passenger Side - 2452861

    AFTERMARKET

    $51.99
    5.75 Inch Center To End Tie Rod End W/ 1-1/4 Inch Rod OD* High Quality Tie Rod End* Dimensions: - 1-1/4 Inch Rod OD - 5.75 Inch Center To End - 2.638 Inch Height Of Taper - 7/8 Inch- 14 Stud Thread*...
    29-05090026
    SKU:
    29-05090026
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $51.99
    Qty in Cart: 0
    Price:
    $51.99
    Subtotal:
  • Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Passenger Side - A23144M273

    Tie Rod End Type-5, 10.50 Inch 1-5/8 OD Passenger Side - A23144M273

    AFTERMARKET

    $275.99
    10.50 Inch Center To End Tie Rod End W/ 4.331 Inch Drop* High Quality Tie Rod End* 1-5/8 Inch Rod OD* 10.50 Inch Center To End* 2.634 Inch Height Of Taper* Taper Minor Diameter- 0.967 Inch* Taper...
    29-05090023
    SKU:
    29-05090023
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $275.99
    Qty in Cart: 0
    Price:
    $275.99
    Subtotal:
  • Passenger Side Tie Rod End 5.50 Inch W/ 1-1/8 OD Replaces L20Sv8103C13

    Passenger Side Tie Rod End 5.50 Inch W/ 1-1/8 OD Replaces L20Sv8103C13

    AFTERMARKET

    $94.99
    Passenger Side Tie Rod EndOptimize your truck's steering performance with this Passenger Side 5.50 Inch Tie Rod End. Measuring 1-1/8-inch rod OD, 5.50-inch center-to-end, and 1.929-inch taper height...
    29-05090013
    SKU:
    29-05090013
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $94.99
    Qty in Cart: 0
    Price:
    $94.99
    Subtotal:
  • Driver Side 5.50 Inch Tie Rod End 1-1/8 OD Replaces L20Sv8102C13

    Driver Side 5.50 Inch Tie Rod End 1-1/8 OD Replaces L20Sv8102C13

    AFTERMARKET

    $94.99
    Driver Side Tie Rod EndEnsure dependable truck steering with this Driver Side 5.50 Inch Tie Rod End. Featuring a 1-1/8-inch rod OD, 5.50-inch center-to-end length, and taper height of 1.929 inches...
    29-05090014
    SKU:
    29-05090014
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $94.99
    Qty in Cart: 0
    Price:
    $94.99
    Subtotal:
  • Cross Tube 56 Inch -1697837C91

    Cross Tube 56 Inch -1697837C91

    AFTERMARKET

    $1,150.99
    Cross Tube Replaces 1697837C91* High Quality Cross Tube* 56 Inch Length* Made In USA* Sold Individually* Warranty On Cross Tubes Against Defects In Workmanship & Material From Date Of Purchase***...
    29-05090004
    SKU:
    29-05090004
    Truck Class:
    Heavy Duty
    Length Options:
    56 Inch
    Material Options:
    Steel
    Make:
    Bus
    Make:
    International
    Product Type:
    Frame & Chassis
    $1,150.99
    Qty in Cart: 0
    Price:
    $1,150.99
    Subtotal:
  • Tie Rod End 4.875 Inch 1-1/8 OD-12 Driver Side - 671488

    Tie Rod End 4.875 Inch 1-1/8 OD-12 Driver Side - 671488

    AFTERMARKET

    $54.99
    4.875 Inch Center To End Driver Side Tie Rod End* High Quality Tie Rod End* Dimensions: - 4.875 Inch Length  - 2.528 Inch Width* Made In USA* Sold Individually* Warranty On Tie Rod Ends Against...
    29-05090005
    SKU:
    29-05090005
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Chevrolet
    Make:
    GMC
    Product Type:
    Frame & Chassis
    $54.99
    Qty in Cart: 0
    Price:
    $54.99
    Subtotal:
  • Tie Rod End 4.875 Inch 1-1/8 OD -12 Passenger Side - 671489

    Tie Rod End 4.875 Inch 1-1/8 OD -12 Passenger Side - 671489

    AFTERMARKET

    $62.99
    4.875 Inch Center To End Passenger Side Tie Rod End* High Quality Tie Rod End* Dimensions: - 4.875 Inch Length  - 2.528 Inch Width* Made In USA* Sold Individually* Warranty On Tie Rod Ends Against...
    29-05090007
    SKU:
    29-05090007
    Material Options:
    Steel
    Length Options:
    5 Inch
    Truck Class:
    Heavy Duty
    Make:
    Chevrolet
    Make:
    GMC
    Product Type:
    Frame & Chassis
    $62.99
    Qty in Cart: 0
    Price:
    $62.99
    Subtotal:
  • BESTfit Square U Bolt Kit 3/4 In-16 x 4 In x 4-5/8 Inch Grade 8

    BESTfit Square U Bolt Kit 3/4 In-16 x 4 In x 4-5/8 Inch Grade 8

    BESTFIT TRUCK PARTS

    $44.96
    BESTfit 3/4 Inch Diameter Squared Top U Bolt Kit* High Quality U-Bolt Kit* Kit Includes:  - (2) U Bolts (Square Bend)* Dimensions:  - 4.625 Inch Length  - 2.0 Inch Of 3/4 Inch - 16 Thread  - 4.0 Inch...
    29-05090001
    SKU:
    29-05090001
    Material Options:
    Steel
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $44.96
    Qty in Cart: 0
    Price:
    $44.96
    Subtotal:
  • Cotter Pin 1/4 X 2 Inch - XB5 For Holland

    Cotter Pin 1/4 X 2 Inch - XB5 For Holland

    AUTOMANN USA

    $0.66
    1/4 X 2 Inch Cotter Pin Replaces XB5* High Quality Cotter Pin* 1/4 Inch X 2.0 Inch Length* Sold Individually* Warranty On Cotter Pins Against Defects In Workmanship & Material From Date Of...
    09-05250037
    SKU:
    09-05250037
    Material Options:
    Aluminum
    Length Options:
    2 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $0.66
    Qty in Cart: 0
    Price:
    $0.66
    Subtotal:
  • Cotter Pin 1/4 X 3 Inch - E2306, 103426 For Eaton, Fruehauf Axles

    Cotter Pin 1/4 X 3 Inch - E2306, 103426 For Eaton, Fruehauf Axles

    AUTOMANN USA

    $1.47
    1/4 X 3 Inch Cotter Pin* High Quality Cotter Pin* 1/4 Inch X 3.0 Inch Length* Sold Individually* Warranty On Cotter Pins Against Defects In Workmanship & Material From Date Of Purchase*** High...
    09-05170096
    SKU:
    09-05170096
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Length Options:
    3 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1.47
    Qty in Cart: 0
    Price:
    $1.47
    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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