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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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  • Qty in Cart
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  • Price
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  • Brake Drum 10 Hole Unimount Balanced 16.5 x 7 Inch

    Brake Drum 10 Hole Unimount Balanced 16.5 x 7 Inch

    OPP - ORIGINAL PARTS PROGRAM

    $240.99
    Unimount Balanced Wheel Brake Drum* High Quality Drum* Brake Size: 16.5 x 7 Inches* Bolt Number: 10* Bolt Center Diameter: 7.56 inches* Surface Flat: 7.56 inches* Balanced* Sold Individually*...
    09-0517300
    SKU:
    09-0517300
    Diameter Options:
    16 1/2 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $240.99
    Qty in Cart: 0
    Price:
    $240.99
    Subtotal:
  • 15.0 X 4.0 IN Brake Shoe Set W/ 2 Shores & Hardware

    15.0 X 4.0 IN Brake Shoe Set W/ 2 Shores & Hardware

    AFTERMARKET

    $122.99
    Brake Shoe Set W/ 2 Shores & Hardware* High Quality Brake Shoe Set* Contains: - 2 Shoes - Hardware Kit* 15.0 X 4.0 Inch* Sold As Set* Warranty On Brake Shoe Sets Against Defects In Workmanship &...
    09-0517111
    SKU:
    09-0517111
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $122.99
    Qty in Cart: 0
    Price:
    $122.99
    Subtotal:
  • 16.5 X 7 Inch Brake Shoe Kit 4709ES Plus

    16.5 X 7 Inch Brake Shoe Kit 4709ES Plus

    AFTERMARKET

    $140.99
    Brake Shoe Kit / No Cores Required* High Quality Brake Shoe Kit * 4709ES Plus* Contains 2 Shoes And 1 Hardware Kit* Shoes Have 23K Standard Lining* Sold As Kit * Warranty On Brake Shoe Kits Against...
    09-0517108
    SKU:
    09-0517108
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $140.99
    Qty in Cart: 0
    Price:
    $140.99
    Subtotal:
  • 16.5 X 7 Inch Brake Shoe Kit 4707Q Plus

    16.5 X 7 Inch Brake Shoe Kit 4707Q Plus

    AUTOMANN USA

    $98.99
    Brake Shoe Kit / No Cores RequiredThis high quality 16.5 X 7 inch brake shoe kit 4707Q plus includes 2 shoes and 1 hardware kit. The shoes have a 23K standard lining and no core is required.* High...
    09-0517107
    SKU:
    09-0517107
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $98.99
    Qty in Cart: 0
    Price:
    $98.99
    Subtotal:
  • 16.5 X 7 Inch Brake Shoe Kit 4515F3 Plus

    16.5 X 7 Inch Brake Shoe Kit 4515F3 Plus

    AUTOMANN USA

    $104.99
    Brake Shoe Kit / No Cores Required* High Quality Brake Shoe Kit * 4515F3 Plus* Contains 2 Shoes And 1 Hardware Kit* Shoes Have 23K Standard Lining* Sold As Kit * Warranty On Brake Shoe Kits Against...
    09-0517106
    SKU:
    09-0517106
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • TPHD Type 30/30 Piggy Back Brake Chamber With Mounting Clamp & Diaphragm - Long Stroke Sealed Unit

    TPHD Type 30/30 Piggy Back Brake Chamber With Mounting Clamp & Diaphragm - Long Stroke Sealed Unit

    AFTERMARKET

    $110.99
    Double Brake Chamber Type 30/30 Long Stroke - 8.15 Inch Height By TPHDDeliver consistent braking performance with the TPHD Type 30/30 Piggy Back Brake Chamber - Long Stroke Sealed Unit. With a 3...
    09-051703
    SKU:
    09-051703
    Position:
    Rear
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $110.99
    Qty in Cart: 0
    Price:
    $110.99
    Subtotal:
  • 4.75 Sensor Wire Clip

    4.75 Sensor Wire Clip

    AUTOMANN USA

    $7.11
    Sensor Wire Clip* High Quality Sensor Wire Clip* 4.75 Inch I.D.* Sold Individually* Warranty On Sensor Wire Clips Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    09-051700013
    SKU:
    09-051700013
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $7.11
    Qty in Cart: 0
    Price:
    $7.11
    Subtotal:
  • Dust Shield For Hendrickson Maxx22T Air Disc Brakes W/ 415MM DIA Rotors

    Dust Shield For Hendrickson Maxx22T Air Disc Brakes W/ 415MM DIA Rotors

    AFTERMARKET

    $50.99
    Dust Shield W/ Mounting Hardware* High Quality Dust Shield* Includes: - Mounting Hardware - 1.25 MM Bolts* Sold Individually* Warranty On Dust Shields Against Defects In Workmanship & Material From...
    09-051700012
    SKU:
    09-051700012
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Camshaft Repair Kit Services One Wheel W/ INTRAAX Axle

    BESTfit Camshaft Repair Kit Services One Wheel W/ INTRAAX Axle

    BESTFIT TRUCK PARTS

    $29.10
    Camshaft Repair Kit For INTRAAX 16.5 Inch HXS Wheel By BESTfitKeep your INTRAAX axle performing at peak efficiency with the BESTfit Camshaft Repair Kit, engineered for long-lasting durability...
    09-051700008
    SKU:
    09-051700008
    Length Options:
    16 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $29.10
    Qty in Cart: 0
    Price:
    $29.10
    Subtotal:
  • 12.25 X 7.5 Inch Brake Drum W/ 8 Mounting Holes For Dexter Axles - Replaces 63680

    12.25 X 7.5 Inch Brake Drum W/ 8 Mounting Holes For Dexter Axles - Replaces 63680

    AUTOMANN USA

    $216.99
    Brake Drum W/ 9 Inch Pilot Diameter & 11.22 Inch Brake SurfaceMaintain safe, efficient braking on Dexter axle-equipped vehicles with this 12.25 x 7.5 inch Brake Drum. Designed with a commonly used...
    09-051700007
    SKU:
    09-051700007
    Diameter Options:
    9 Inch
    Height Options:
    11 Inch
    Length Options:
    10 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $216.99
    Qty in Cart: 0
    Price:
    $216.99
    Subtotal:
  • 12.25 X 7.5 Inch Brake Drum For Commonly Used Hubs - 150.T1108.S5, 150.T1108.S6

    12.25 X 7.5 Inch Brake Drum For Commonly Used Hubs - 150.T1108.S5, 150.T1108.S6

    AUTOMANN USA

    $364.99
    12.25 X 7.5 Inch Brake Drum* High Quality Brake Drum* Brake Surface Dia (A): 12.250* Overall Depth (B): 10.470 Inch* Brake Surface Flat (C): 8.25* Pilot Dia (D): 7.130* Bolt Circle Dia (E): 8.750*...
    09-051700005
    SKU:
    09-051700005
    Diameter Options:
    12 Inch
    Height Options:
    10 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $364.99
    Qty in Cart: 0
    Price:
    $364.99
    Subtotal:
  • Brake Drum 7 X 15 Inch - Replaces 2308400, HWI633049, 3219A, 61577, 61577F

    Brake Drum 7 X 15 Inch - Replaces 2308400, HWI633049, 3219A, 61577, 61577F

    AUTOMANN USA

    $308.99
    7 X 15 Inch Brake DrumUpgrade your truck's braking system with the 7 x 15 Inch Brake Drum. Crafted for precision and performance, it features a 15-inch brake surface, 7-inch height, and 10.59-inch...
    09-051700003
    SKU:
    09-051700003
    Diameter Options:
    15 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $308.99
    Qty in Cart: 0
    Price:
    $308.99
    Subtotal:
  • Brake Drum 15 X 8.625 Inch Replaces 107866, 3744, 3744X, 85123466002, 61991, 61991B

    Brake Drum 15 X 8.625 Inch Replaces 107866, 3744, 3744X, 85123466002, 61991, 61991B

    AUTOMANN USA

    $310.99
    10 Hole Brake Drum With 15 Inch Brake Surface Diameter & 11.9 Inch Overall DepthKeep your truck's brakes performing at their best with this high-quality 15 x 8.625 inch Brake Drum, engineered to...
    09-051700001
    SKU:
    09-051700001
    Diameter Options:
    15 Inch
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $310.99
    Qty in Cart: 0
    Price:
    $310.99
    Subtotal:
  • BESTfit 12.34 Gallon Black Steel Air Brake Tank 12 X 29.5 Inch

    BESTfit 12.34 Gallon Black Steel Air Brake Tank 12 X 29.5 Inch

    BESTFIT TRUCK PARTS

    $171.99
    Trailer Air Tank With 3/4 Inch Front & Back Port With 1/4 Inch NPT Drain Port By BESTfitDurability and design come together in the BESTfit 12.34 Gallon Air Brake Tank, a component engineered for...
    09-051410
    SKU:
    09-051410
    Diameter Options:
    12 Inch
    Truck Class:
    Universal
    Width Options:
    29 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Color:
    Black
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $171.99
    Qty in Cart: 0
    Price:
    $171.99
    Subtotal:
  • BESTfit Black Steel Air Tank 12 X 29.5 Inch With 3 Front Ports

    BESTfit Black Steel Air Tank 12 X 29.5 Inch With 3 Front Ports

    BESTFIT TRUCK PARTS

    $203.99
    2850 Cubic Inch Volume Air Tank By BESTfitBuilt for tough environments, the BESTfit Black Steel Air Tank provides consistent air support with its rugged steel design and 150 PSI rating. The 12 x 29.5...
    09-051406
    SKU:
    09-051406
    Truck Class:
    Universal
    Length Options:
    29 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Color:
    Black
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $203.99
    Qty in Cart: 0
    Price:
    $203.99
    Subtotal:
  • Minimizer Jost JSK37H 5th Wheel Slick Plate Mounting Kit 100088 - Bar Not Included

    Minimizer Jost JSK37H 5th Wheel Slick Plate Mounting Kit 100088 - Bar Not Included

    MINIMIZER

    $53.99
    Minimizer Slick Plate 100088 Jost FW 37th Mounting Hardware Kit* High Quality Mounting Hardware Kit* 100088 Jost FW 37H Mounting Hardware Kit* Ram Bar Not Included* Sold Individually* Warranty On...
    09-0511066
    SKU:
    09-0511066
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • Minimizer Slick Plate Ram Bars For 100088 JSK37H - Bars Only

    Minimizer Slick Plate Ram Bars For 100088 JSK37H - Bars Only

    MINIMIZER

    $56.99
    Minimizer Slick Plate Ram Bars For 100088 JSK37H* High Quality Slick Plate Ram Bars* For 100088 JSK37H* No Hardware Just Bars* 5.75 Inch Length* Sold Individually* Warranty On Slick Plate Ram Bars...
    09-0511065
    SKU:
    09-0511065
    Location:
    Made In USA
    Truck Class:
    Universal
    Length Options:
    6 Inch
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $56.99
    Qty in Cart: 0
    Price:
    $56.99
    Subtotal:
  • Minimizer Slick Plate 100061 FW 35 Ram Bars

    Minimizer Slick Plate 100061 FW 35 Ram Bars

    MINIMIZER

    $65.99
    Minimizer Slick Plate 100061 FW 35 Ram Bars - Bars Only* High Quality Ram Bars* FW 35 Ram Bars Only* Hardware Not Included, Please See Part 09-0511063 For Hardware* For Slick Plate 09-05110218 - Sold...
    09-0511064
    SKU:
    09-0511064
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $65.99
    Qty in Cart: 0
    Price:
    $65.99
    Subtotal:
  • Mounting Hardware Kit For 5th Wheel Slick Plate

    Mounting Hardware Kit For 5th Wheel Slick Plate

    MINIMIZER

    $93.99
    Hardware Kit For Mounting Minimizer 5th Wheel Slick Plate* High Quality Hardware Kit* Mounting Hardware For 5th Wheel Slick Plate* Includes:  - Bolts  - Washers  - Nuts* Ram Bar And 5th Wheel Slick...
    09-0511063
    SKU:
    09-0511063
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $93.99
    Qty in Cart: 0
    Price:
    $93.99
    Subtotal:
  • FREE SHIPPING OVER $249
    31 Inch Chrome 5th Wheel Pin Puller With S Hook & Bar Style Handle

    31 Inch Chrome 5th Wheel Pin Puller With S Hook & Bar Style Handle

    UNITED PACIFIC

    $14.96
    31 Inch Chrome Fifth Wheel Pin Puller With HookThis multiple purpose 5th wheel pin puller is designed to help you release the king pin without the need to climb under the trailer and use two hands to...
    09-05110509
    SKU:
    09-05110509
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    Ready To Ship:
    Yes
    $14.96
    Qty in Cart: 0
    Price:
    $14.96
    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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