null

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
  • Leaf Spring Repair Plate 2-1/2 X 0.447 X 60 Inch W/ 6 Inch Arch

    Leaf Spring Repair Plate 2-1/2 X 0.447 X 60 Inch W/ 6 Inch Arch

    AFTERMARKET

    $85.99
    Spring Steel Repair Plate With No Center Hole* High Quality Repair Plate* Dimensions:  - 2 1/2 Inch Plate Width  - 0.447 Inch Plate Thickness  - 60 Inch Overall Length  - 5.187 Inch Arch* Spring...
    29-05100216
    SKU:
    29-05100216
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $85.99
    Qty in Cart: 0
    Price:
    $85.99
    Subtotal:
  • Axle King Pin Bushing Service Set Replaces 60961628 For Hendrickson NXT

    Axle King Pin Bushing Service Set Replaces 60961628 For Hendrickson NXT

    AFTERMARKET

    $122.99
    Hendrickson NXT King Pin Bushing Service KitKeep your Hendrickson NXT suspension system operating smoothly with the Axle King Pin Bushing Service Set. This set includes driver and passenger side...
    29-05090094
    SKU:
    29-05090094
    Truck Class:
    Heavy Duty
    Make:
    Freightliner
    Make:
    Western Star
    Make:
    Mack
    Make:
    Bus
    Make:
    Volvo
    Make:
    Sterling
    Product Type:
    Frame & Chassis
    $122.99
    Qty in Cart: 0
    Price:
    $122.99
    Subtotal:
  • End Beam Bushing 70 Duro - 2-1/2 ID x 4-3/8 OD x 5-1/4 Inch

    End Beam Bushing 70 Duro - 2-1/2 ID x 4-3/8 OD x 5-1/4 Inch

    AFTERMARKET

    $59.99
    End Beam Bushing With 3-1/2 Inch Sleeve* High Quality End Beam Bushing* Rubber* Dimensions:  - 2 1/2 Inch ID   - 4 3/8 Inch OD   - 5 3/4 Inch Length  - 4 1/4 Inch Sleeve* Made In USA* Sold...
    29-05100185
    SKU:
    29-05100185
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $59.99
    Qty in Cart: 0
    Price:
    $59.99
    Subtotal:
  • Rear 12 Leaf Spring 12/PD - 22,400 Lbs. Capacity

    Rear 12 Leaf Spring 12/PD - 22,400 Lbs. Capacity

    AFTERMARKET

    $678.99
    Rear Leaf Spring 12/PD* High Quality Leaf Spring* 4 Inch Width* 17 1/16 S.E. * 20 11/16 I.E.* 2 1/2 Inch Arch* Spring Type- Multi-Leaf Spring* Spring Eye- 1* Number Of Leaves- 12* Capacity- 22400 Lbs...
    29-05100154
    SKU:
    29-05100154
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $678.99
    Qty in Cart: 0
    Price:
    $678.99
    Subtotal:
  • Rear 8 Leaf Spring PD/8 - 8,500 Lbs. Capacity

    Rear 8 Leaf Spring PD/8 - 8,500 Lbs. Capacity

    AFTERMARKET

    $762.99
    Rear Leaf Spring PD/8 - 8 Leaves Replaces 47475. 350030035* High Quality Leaf Spring* 3 Inch Width * 19 Inch S.E.* 24 1/4 Inch I.E.* Arch- 2-7/8* Spring Type- Multi-Leaf Spring* Spring Eye-1* Number...
    29-05100140
    SKU:
    29-05100140
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $762.99
    Qty in Cart: 0
    Price:
    $762.99
    Subtotal:
  • Rear Load Cushion For Hendrickson Haulmaax

    Rear Load Cushion For Hendrickson Haulmaax

    AFTERMARKET

    $155.99
    Hendrickson Load Cushion Suspension Replaces E14374, 59257000, 64179002, 2586433C1* High Quality Load Cushion* Threads- 1/2 Inch- 13* (4) Flanged Lock Nut* Made In USA* Sold Individually* Warranty On...
    29-05100136
    SKU:
    29-05100136
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $155.99
    Qty in Cart: 0
    Price:
    $155.99
    Subtotal:
  • Rear 13 Leaf Spring - 17,500 Lbs. Capacity For Hendrickson

    Rear 13 Leaf Spring - 17,500 Lbs. Capacity For Hendrickson

    AFTERMARKET

    $795.99
    Hendrickson Leaf Spring - 13 Leaves Replaces Part 45121* High Quality Leaf Spring* 4 Inch Width* 17 1/8 Inch S.E.* 28-1/2 Inch L.E.* Spring Type- Multi- Leaf Spring * Spring Eye- 1* Number Of Leaves-...
    29-05100126
    SKU:
    29-05100126
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $795.99
    Qty in Cart: 0
    Price:
    $795.99
    Subtotal:
  • Extra Leaf Repair Plate Dual 17/32 CBH 3 X 0.401 X 72 Inch OAL W/ 7-1/4 Inch Arch

    Extra Leaf Repair Plate Dual 17/32 CBH 3 X 0.401 X 72 Inch OAL W/ 7-1/4 Inch Arch

    AFTERMARKET

    $110.99
    Extra Leaf Dodge Dual 17/32CBH C-C 3-1/16* High Quality Extra Leaf* Dimensions:  - 3 Inch Plate Width  - 0.401 Inch Plate Thickness  - 34 1/2 Inch Divided Length A And B  - 3 1/16 Inch C To C  - 72...
    17-05100020
    SKU:
    17-05100020
    Truck Class:
    Light Duty
    Material Options:
    Steel
    Make:
    Dodge
    Product Type:
    Frame & Chassis
    $110.99
    Qty in Cart: 0
    Price:
    $110.99
    Subtotal:
  • 2 Leaf Parabolic Spring - 6,000 lbs. Capacity For Kenworth, Peterbilt

    2 Leaf Parabolic Spring - 6,000 lbs. Capacity For Kenworth, Peterbilt

    AUTOMANN USA

    $619.99
    Full Tapered Front Parabolic Leaf Spring - 2 Leaves* High Quality Parabolic Leaf Spring* Se 27-5/16 * Le 32-1/4 * Arch 6-3/16* Capacity 6000* Sold Individually* Warranty On Parabolic Leaf Springs...
    29-05090175
    SKU:
    29-05090175
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Kenworth
    Make:
    Peterbilt
    Product Type:
    Frame & Chassis
    $619.99
    Qty in Cart: 0
    Price:
    $619.99
    Subtotal:
  • Radius Rod Bushing 2.5 ID X 3.625 OD X 2.5 Inch

    Radius Rod Bushing 2.5 ID X 3.625 OD X 2.5 Inch

    AFTERMARKET

    $82.99
    Radius Rod Bushing Universal* High Quality Radius Rod Bushing* Dimensions:  - 2.50 Inch Length  - 3.625 Inch O.D.   - 2.50 Inch I.D.* Made In USA* Sold Individually* Warranty On Radius Rod Bushings...
    09-05250062
    SKU:
    09-05250062
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $82.99
    Qty in Cart: 0
    Price:
    $82.99
    Subtotal:
  • Camshaft Bushing 1.28 ID X 1.885 OD X 1.32 Inch For Eaton Steer Axle

    Camshaft Bushing 1.28 ID X 1.885 OD X 1.32 Inch For Eaton Steer Axle

    AUTOMANN USA

    $3.79
    Camshaft Bushing Replacement Part For R627029, C66837, 28-1264* High Quality Camshaft Bushing* Dimensions:  - 1.28 Inch I.D.   - 1.885 Inch O.D.  - 1.32 Inch Length* Sold Individually* Warranty On...
    09-05170194
    SKU:
    09-05170194
    Material Options:
    Plastic/Poly
    Diameter Options:
    1 1/4 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $3.79
    Qty in Cart: 0
    Price:
    $3.79
    Subtotal:
  • Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 48 Inch OAL W/ 3.31 Inch Arch

    Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 48 Inch OAL W/ 3.31 Inch Arch

    AFTERMARKET

    $76.99
    Spring Steel Repair Plate With 12.5 MM Center Bolt Holes* High Quality Spring Leaf Plate* Dimensions:  - Plate Width- 70Mm  - Plate Thickness- 11Mm  - Divided Length A And B- 24 Inch  - Overall...
    09-05100016
    SKU:
    09-05100016
    Material Options:
    Steel
    Length Options:
    48 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $76.99
    Qty in Cart: 0
    Price:
    $76.99
    Subtotal:
  • Main Leaf For 12 Leaf Spring For Hendrickson

    Main Leaf For 12 Leaf Spring For Hendrickson

    AFTERMARKET

    $186.99
    Hendrickson Main Leaf* High Quality Main Leaf* For 12 Leaf Spring* Made In USA* Sold Individually* Warranty On Main Leafs Against Defects In Workmanship & Material From Date Of Purchase*** High...
    09-05100003
    SKU:
    09-05100003
    Material Options:
    Steel
    Length Options:
    27 Inch
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $186.99
    Qty in Cart: 0
    Price:
    $186.99
    Subtotal:
  • T-Rod Sleeve 1.125 ID X 18 Inch For 3 Piece O And S T Rods

    T-Rod Sleeve 1.125 ID X 18 Inch For 3 Piece O And S T Rods

    AFTERMARKET

    $116.99
    18 Inch Torque Rod Sleeve* High Quality T Rod Sleeve* Dimensions:  - 18 Inch Length   - 1.125 Inch ID* For 3-Piece T-Rods* Made In USA * Sold Individually* Warranty On T Rod Sleeves Against Defects...
    09-05250063
    SKU:
    09-05250063
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    18 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $116.99
    Qty in Cart: 0
    Price:
    $116.99
    Subtotal:
  • Camshaft Bushing 1.625 ID X 1.25 OD X 1.625 Inch

    Camshaft Bushing 1.625 ID X 1.25 OD X 1.625 Inch

    AUTOMANN USA

    $3.10
    Camshaft Bushing Replaces 1225R1136, C63104, And 28-1265* High Quality Camshaft Bushing* Dimensions:  - 1.25 Inch I.D.  - 1.625 Inch O.D.  - 1.188 Inch Length* Sold Individually* Warranty On Camshaft...
    09-05170193
    SKU:
    09-05170193
    Diameter Options:
    1 1/2 Inch
    Material Options:
    Plastic/Poly
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $3.10
    Qty in Cart: 0
    Price:
    $3.10
    Subtotal:
  • Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 60 Inch OAL W/ 5.187 Inch Arch

    Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 60 Inch OAL W/ 5.187 Inch Arch

    AFTERMARKET

    $92.99
    Spring Steel Repair Plate With 12.5 MM Center Bolt Holes* High Quality Spring Leaf Plate* Dimensions:  - Plate Width- 70Mm  - Plate Thickness- 11Mm  - Divided Length A And B- 30 Inch  - Overall...
    09-05100015
    SKU:
    09-05100015
    Length Options:
    60 Inch
    Material Options:
    Steel
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $92.99
    Qty in Cart: 0
    Price:
    $92.99
    Subtotal:
  • Camshaft Bushing 1.25 ID X 1.875 OD Inch For Meritor Steer Axl

    Camshaft Bushing 1.25 ID X 1.875 OD Inch For Meritor Steer Axl

    AUTOMANN USA

    $2.53
    Brake Camshaft Bushing Replacement For Parts 1225M897, C66690 And 28-1263* High Quality Camshaft Bushing* Dimensions:  - 1.25 Inch I.D.  - 1.875 Inch O.D.  - 1.156 Inch Length* Sold Individually*...
    09-05170195
    SKU:
    09-05170195
    Truck Class:
    Heavy Duty
    Material Options:
    Plastic/Poly
    Diameter Options:
    1 1/4 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $2.53
    Qty in Cart: 0
    Price:
    $2.53
    Subtotal:
  • Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 56 Inch OAL W/ 4.5 Inch Arch

    Single Spring Leaf Repair Plate Metric 12.5 MM CBH 70 X 11 mm - 56 Inch OAL W/ 4.5 Inch Arch

    AFTERMARKET

    $89.99
    Spring Steel Repair Plate With 12.5 MM Center Bolt Holes* High Quality Spring Leaf Plate* Dimensions:  - Plate Width- 70Mm  - Plate Thickness- 11Mm  - Divided Length A And B- 28 Inch  - Overall...
    09-05100017
    SKU:
    09-05100017
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    56 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $89.99
    Qty in Cart: 0
    Price:
    $89.99
    Subtotal:
  • Parabolic Extra Leaf - 2,700 Lbs. Capacity

    Parabolic Extra Leaf - 2,700 Lbs. Capacity

    AFTERMARKET

    $248.99
    Parabolic Extra Leaf* High Quality Parabolic Extra Leaf* Dimensions:  - 26-1/8 Inch S.E.  - 30-7/8 Inch I.E.  - 4-3/4 Inch Arch* Capacity- 2700 Lbs.* Made In USA* Sold Individually* Warranty On...
    09-05090012
    SKU:
    09-05090012
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $248.99
    Qty in Cart: 0
    Price:
    $248.99
    Subtotal:
  • Wrapper Leaf For 12 Leaf Spring For Hendrickson

    Wrapper Leaf For 12 Leaf Spring For Hendrickson

    AFTERMARKET

    $179.99
    Hendrickson Wrapper Leaf* High Quality Wrapper Leaf* For 12 Leaf Spring* Made In USA* Sold Individually* Warranty On Wrapper Leafs Against Defects In Workmanship & Material From Date Of Purchase***...
    09-05100004
    SKU:
    09-05100004
    Truck Class:
    Heavy Duty
    Material Options:
    Steel
    Length Options:
    36 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $179.99
    Qty in Cart: 0
    Price:
    $179.99
    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.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!