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Western Star Trucks

Looking for Western Star truck parts? At 4 State Trucks, you'll find everything from durable replacements to custom accessories for your rig. Explore and find the perfect parts for your Western Star truck today!
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Auxiliary Spring Plate Replaces 59191, 591911, 59191000, 59191-000, 59191001, 59191-001, 2586425C1 For Hendrickson HAULMAXX Suspension

    Auxiliary Spring Plate Replaces 59191, 591911, 59191000, 59191-000, 59191001, 59191-001, 2586425C1 For Hendrickson HAULMAXX Suspension

    AFTERMARKET

    $53.99
    Auxiliary Spring PlatePut strength back into your suspension setup with this high-quality Auxiliary Spring Plate for Hendrickson HAULMAXX applications. This auxiliary plate helps support load balance...
    29-05100189
    SKU:
    29-05100189
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $53.99
    Qty in Cart: 0
    Price:
    $53.99
    Subtotal:
  • Restrictor Can Replaces 373029, E7758, 3507134C1, 25171445, 61QK432, R307758 For Chalmers Suspension

    Restrictor Can Replaces 373029, E7758, 3507134C1, 25171445, 61QK432, R307758 For Chalmers Suspension

    AFTERMARKET

    $180.99
    11.625 X 5.125 X 0.173 Inch Restrictor CanMaintain superior heavy-duty suspension performance with this Chalmers Restrictor Can. Built for 20K, 700 Series trucks with a high center of gravity, it is...
    29-05100161
    SKU:
    29-05100161
    Product Type:
    Frame & Chassis
    Height Options:
    5 Inch
    Diameter Options:
    11 1/2 Inch
    Make:
    Universal Items
    $180.99
    Qty in Cart: 0
    Price:
    $180.99
    Subtotal:
  • Adapter Sleeve Replaces 45163, 45163000, 526000C1, 90001002, 3082229 For Holland/Neway Suspension

    Adapter Sleeve Replaces 45163, 45163000, 526000C1, 90001002, 3082229 For Holland/Neway Suspension

    AUTOMANN USA

    $18.50
    2.656 X 2.50 X 0.781 Inch Adapter SleeveThis Holland/Neway Adapter Sleeve is a reliable replacement for OEM parts 45163, 45163000, 526000C1, 90001002, and 3082229. Measuring 2.656 inches overall...
    29-05100144
    SKU:
    29-05100144
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $18.50
    Qty in Cart: 0
    Price:
    $18.50
    Subtotal:
  • Spigot Cap Replaces 800055, E7768, 1515967C1, 800055CS1, R307768, 5HR711 For Chalmers Suspension

    Spigot Cap Replaces 800055, E7768, 1515967C1, 800055CS1, R307768, 5HR711 For Chalmers Suspension

    AFTERMARKET

    $10.03
    2.375/ 4.531 Inch Spigot CapEnsure durable and reliable suspension performance with this high-quality Spigot Cap for Chalmers suspension systems. Designed to replace 800055, E7768, 1515967C1,...
    29-05100162
    SKU:
    29-05100162
    Diameter Options:
    4 1/2 Inch
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $10.03
    Qty in Cart: 0
    Price:
    $10.03
    Subtotal:
  • Hanger W/ 0.91 Inch Offset Replaces E7569, 48598002, 48598-002, 57594002, 57594-002, 57594002L, 57594-002L, 25037416 For Hendrickson Suspension Systems

    Hanger W/ 0.91 Inch Offset Replaces E7569, 48598002, 48598-002, 57594002, 57594-002, 57594002L, 57594-002L, 25037416 For Hendrickson Suspension Systems

    AFTERMARKET

    $137.99
    Hanger W/ 0.91 Inch Offset Used On U/UE/RU/RUE/RT/RTE Series Drive AxleEngineered for precision and strength, this Hendrickson Hanger with a 0.91-inch offset fits U/UE/RU/RUE/RT/RTE series drive...
    29-05100132
    SKU:
    29-05100132
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $137.99
    Qty in Cart: 0
    Price:
    $137.99
    Subtotal:
  • Hanger Replaces E9635A, E-9635A, 470763, 47076-3, 47076003, 47076-003, 485983, 48598-3, 48598003, 48598-003, 57584003, 57584-003, 575943, 57594-3, 57594003, 57594-003, R309635A For Hendrickson Suspension Systems

    Hanger Replaces E9635A, E-9635A, 470763, 47076-3, 47076003, 47076-003, 485983, 48598-3, 48598003, 48598-003, 57584003, 57584-003, 575943, 57594-3, 57594003, 57594-003, R309635A For Hendrickson Suspension Systems

    AFTERMARKET

    $146.99
    Hanger Used On RT/RTE Series Drive AxleRestore heavy-duty suspension reliability with this Hendrickson Hanger for RT/RTE series drive axles. It is engineered with horizontal center-to-center...
    29-05100131
    SKU:
    29-05100131
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $146.99
    Qty in Cart: 0
    Price:
    $146.99
    Subtotal:
  • King Pin Kit Replaces 1008431, R200267 For Dana & Spicer Suspension Systems

    King Pin Kit Replaces 1008431, R200267 For Dana & Spicer Suspension Systems

    AFTERMARKET

    $296.99
    King Pin Kit W/ 1.625 X 9.20 Inch King Pin & Composite BushingsRestore your Dana & Spicer suspension system with this King Pin Kit. Kit includes single draw key king pins, composite bushings,...
    29-05090170
    SKU:
    29-05090170
    Diameter Options:
    1 1/2 Inch
    Length Options:
    9 1/16 Inch
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $296.99
    Qty in Cart: 0
    Price:
    $296.99
    Subtotal:
  • Steer Axle Suspension Height Control Valve Replaces 59935000, 59935002, E13995, R301335 For Freightliner Cascadia, Western Star 4900 & Constellation

    Steer Axle Suspension Height Control Valve Replaces 59935000, 59935002, E13995, R301335 For Freightliner Cascadia, Western Star 4900 & Constellation

    AFTERMARKET

    $124.99
    Steer Axle Suspension Height Control Valve- 90 PSI Working Pressure & 130 PSI Maximum PressureTake control of your Freightliner or Western Star suspension system with this premium height control...
    29-05090178
    SKU:
    29-05090178
    Product Type:
    Frame & Chassis
    Position:
    Passenger Side
    Make:
    Western Star
    Make:
    Freightliner
    $124.99
    Qty in Cart: 0
    Price:
    $124.99
    Subtotal:
  • King Pin Kit Replaces R201609 For Meritor Suspension Systems

    King Pin Kit Replaces R201609 For Meritor Suspension Systems

    AFTERMARKET

    $248.99
    King Pin Kit W/ 1.794 X 9.016 Inch King Pin & Composite BushingsRestore your Meritor suspension system with this comprehensive King Pin Kit. The kit includes opposite double draw key king pins,...
    29-05090064
    SKU:
    29-05090064
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $248.99
    Qty in Cart: 0
    Price:
    $248.99
    Subtotal:
  • King Pin Kit Replaces 28345, ETN328345 For Eaton Suspension Systems

    King Pin Kit Replaces 28345, ETN328345 For Eaton Suspension Systems

    AFTERMARKET

    $430.99
    King Pin Kit W/ 1.873 X 9.06 Inch King Pin & Composite BushingsKeep your Eaton suspension operating efficiently with this high-quality King Pin Kit. Complete with single draw key king pins, composite...
    29-05090155
    SKU:
    29-05090155
    Diameter Options:
    2 Inch
    Product Type:
    Frame & Chassis
    Length Options:
    9 Inch
    Position:
    Kit Full
    Make:
    Universal Items
    $430.99
    Qty in Cart: 0
    Price:
    $430.99
    Subtotal:
  • King Pin Kit Replaces R203018, 7014505, E1460 For Dana & Spicer Suspension Systems

    King Pin Kit Replaces R203018, 7014505, E1460 For Dana & Spicer Suspension Systems

    AUTOMANN USA

    $354.99
    King Pin Kit W/ 1.87 X 9.07 Inch King Pin & Pre-Sized No-Ream Bi-Metal BushingsTake control of your heavy-duty suspension system with this Dana & Spicer King Pin Kit. This kit comes complete with...
    29-05090166
    SKU:
    29-05090166
    Diameter Options:
    2 Inch
    Product Type:
    Frame & Chassis
    Length Options:
    9 Inch
    Position:
    Kit Full
    Make:
    Universal Items
    $354.99
    Qty in Cart: 0
    Price:
    $354.99
    Subtotal:
  • King Pin Kit Replaces 331435 For Dana & Spicer Suspension Systems

    King Pin Kit Replaces 331435 For Dana & Spicer Suspension Systems

    AFTERMARKET

    $404.99
    King Pin Kit W/ 2.045 X 10.07 Inch King Pin & Composite BushingsEnsure smooth steering and reliable suspension with this King Pin Kit for Dana & Spicer systems, replacing part 331435. The kit...
    29-05090059
    SKU:
    29-05090059
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $404.99
    Qty in Cart: 0
    Price:
    $404.99
    Subtotal:
  • King Pin Kit Replaces 328343 For Eaton Suspension Systems

    King Pin Kit Replaces 328343 For Eaton Suspension Systems

    AFTERMARKET

    $432.99
    King Pin Kit W/ 1.873 X 9.07 Inch King Pin & Bi-Metal BushingsThis high-quality Eaton King Pin Kit ensures smooth, reliable suspension performance. The kit includes single draw key king pins,...
    29-05090154
    SKU:
    29-05090154
    Product Type:
    Frame & Chassis
    Diameter Options:
    1 1/2 Inch
    Length Options:
    9 Inch
    Make:
    Universal Items
    $432.99
    Qty in Cart: 0
    Price:
    $432.99
    Subtotal:
  • King Pin Kit Replaces 700040, 700040-KIT For Ingersoll/IMT Axle Kits

    King Pin Kit Replaces 700040, 700040-KIT For Ingersoll/IMT Axle Kits

    AFTERMARKET

    $481.99
    King Pin Kit W/ 2.248 X 11.30 Inch King Pin & Bronze BushingsKeep your Ingersoll or IMT axle system performing at its best with this King Pin Kit. Includes opposite double draw key king pins, bronze...
    29-05090055
    SKU:
    29-05090055
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $481.99
    Qty in Cart: 0
    Price:
    $481.99
    Subtotal:
  • King Pin Kit Replaces 328347, ETN328347 For Dana & Spicer Suspension Systems

    King Pin Kit Replaces 328347, ETN328347 For Dana & Spicer Suspension Systems

    AFTERMARKET

    $315.99
    King Pin Kit W/ 1.873 X 9.07 Inch King Pin & Bi-Metal BushingsBuilt for long-lasting performance, this King Pin Kit is a perfect solution for Dana & Spicer suspension systems. It includes same side...
    29-05090061
    SKU:
    29-05090061
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $315.99
    Qty in Cart: 0
    Price:
    $315.99
    Subtotal:
  • King Pin Kit Replaces 2505494C91, 8889361440, 88936144, R201319, R201471 For Dana, Spicer & Ridewell Suspension Systems

    King Pin Kit Replaces 2505494C91, 8889361440, 88936144, R201319, R201471 For Dana, Spicer & Ridewell Suspension Systems

    AFTERMARKET

    $323.99
    King Pin Kit W/ 1.794 X 10.41 Inch King Pin & Composite BushingsUpgrade or rebuild your Dana, Spicer, or Ridewell suspension system with this high-quality King Pin Kit. Includes opposite side double...
    29-05090058
    SKU:
    29-05090058
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $323.99
    Qty in Cart: 0
    Price:
    $323.99
    Subtotal:
  • King Pin Kit Replaces K122E, R202001, SKS12205 For Dana & Spicer Suspension Systems

    King Pin Kit Replaces K122E, R202001, SKS12205 For Dana & Spicer Suspension Systems

    AFTERMARKET

    $445.99
    King Pin Kit W/ 1.794 X 9.05 Inch King Pin & Rapid No-Ream BushingsRestore your Dana or Spicer suspension with this durable King Pin Kit. The kit includes single draw key king pins, rapid no-ream...
    29-05090056
    SKU:
    29-05090056
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $445.99
    Qty in Cart: 0
    Price:
    $445.99
    Subtotal:
  • King Pin End Cap Replaces 2505494C91, 8889361440, 88936144, R201319, R201471 For Dana & Spicer Suspension Systems

    King Pin End Cap Replaces 2505494C91, 8889361440, 88936144, R201319, R201471 For Dana & Spicer Suspension Systems

    AUTOMANN USA

    $10.38
    2.365 Inch King Pin End Cap Used On Ridewell Lift RSS232T/Flex-Trac 8X To 14KKeep your Dana & Spicer suspension running smoothly with this premium King Pin End Cap. Designed for Ridewell Lift...
    29-05090057
    SKU:
    29-05090057
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $10.38
    Qty in Cart: 0
    Price:
    $10.38
    Subtotal:
  • King Pin Kit Replaces 70.147.05, R203038 For Dana & Spicer Suspension Systems

    King Pin Kit Replaces 70.147.05, R203038 For Dana & Spicer Suspension Systems

    AFTERMARKET

    $347.99
    King Pin Kit W/ 1.873 X 9.07 Inch King Pin & Bi-Metal Pre-Sized No-Ream BushingsRestore precise steering and suspension reliability with this King Pin Kit for Dana and Spicer Suspension. This...
    29-050900044
    SKU:
    29-050900044
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $347.99
    Qty in Cart: 0
    Price:
    $347.99
    Subtotal:
  • Dark Silver Wheel Center Cap For 5 x 5.5 Inch And 6 x 5.5 Inch Bolt Patterns

    Dark Silver Wheel Center Cap For 5 x 5.5 Inch And 6 x 5.5 Inch Bolt Patterns

    WHEEL PROS

    $21.92
    Wheel Center Cap- SilverProtect your hubs and add a touch of style with the Dark Silver Wheel Center Cap, engineered for 5 x 5.5-inch and 6 x 5.5-inch bolt patterns. Featuring a dark silver finish...
    09-2005355
    SKU:
    09-2005355
    Color:
    Silver
    Product Type:
    Wheels
    Make:
    Universal Items
    $21.92
    Qty in Cart: 0
    Price:
    $21.92
    Subtotal:
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Western Star Semi Truck Parts and Accessories

Western Star trucks are known for strength, style, and staying power—and your parts should match that same level of toughness. At 4 State Trucks, we stock premium Western Star semi truck parts and accessories to help keep your rig running right. Whether you're working a Western Star 4900 on the job site or hauling across the country in a Western Star 5700, we’ve got the commercial truck parts you need to stay rolling.

High-Quality Parts for Every Western Star Truck Model

No matter what kind of job your Western Star handles, we’ve got the semi truck parts to keep it in top shape. Our inventory includes replacement and aftermarket parts for both heavy-duty vocational models like the 4900 and long-haul tractors like the 5700. From bumpers and grilles to cab accessories, lights, and engine components—we carry a full selection of truck parts and accessories to restore or upgrade your ride. Built to meet the demands of serious drivers, this lineup keeps your truck working as hard as you do.

Best Features of Western Star Parts & Accessories

When it comes to buying truck parts online, you want parts that are built to last. That’s why our Western Star parts are known for: Fuel-efficient engine compatibility to reduce long-term costs. Rugged design for commercial use, off-road durability, and long-haul wear. Precise fitment across multiple configurations, including day cab and sleeper setups. Parts made for easy installs—saving you time and hassle. Wide inventory of online truck parts for maintenance, upgrades, and customization. Whether you’re replacing worn components or customizing your cab, you’ll find parts that deliver both function and style.

Shop Commercial Truck Parts Online with 4 State Trucks

At 4 State Trucks, we make it easy to find and order Western Star truck parts online. Whether you drive a 4900 or 5700, our goal is to keep your truck running at peak performance with minimal downtime. From must-have semi truck parts to hard-to-find upgrades, we offer affordable pricing, fast shipping, and expert support. Shop online truck parts today and keep your Western Star on the road and working hard.

Frequently Asked Questions About Western Star Truck Parts

What year models and series are your Western Star parts compatible with?

Our Western Star parts cover models from the early 2000s through current production years, including the 4700, 4800, 4900, 5700XE, and 6900 series. Each product listing specifies exact compatibility by year, model, and OEM range. For older Heritage models or specific configurations, we recommend contacting our support team with your OEM number to ensure proper fitment, as Western Star made several mid-year changes that can affect compatibility.

Are your aftermarket parts built to the same quality standards as OEM Western Star parts?

Our aftermarket parts are manufactured to meet or exceed OEM specifications, using heavy-duty materials like 304 stainless steel for chrome parts and 16-gauge steel for painted components. Many of our suppliers are the same manufacturers that produce parts for Western Star's assembly lines. Each part undergoes quality testing for proper fitment and durability. We back this with detailed warranties that match or exceed OEM coverage periods.

What are the most common installation challenges for Western Star bumpers and grilles?

The most frequent installation issues involve bracket alignment on 4900 series trucks due to frame variations, and electrical connections for LED-equipped bumpers on 5700XE models. Most installations require basic hand tools and take 2-4 hours. Pre-2010 models may need mounting hole modifications. We provide detailed installation guides with measurements, and our tech support can walk you through any fitment concerns before you start the installation.

What finish options are available, and how do they hold up in different climates?

We offer chrome-plated steel, polished stainless steel, painted steel, and powder-coated aluminum options. Chrome performs well in dry climates but requires regular maintenance in salt-heavy regions. Stainless steel offers the best corrosion resistance for coastal and winter road conditions. Painted finishes use automotive-grade primers and paints that resist chipping and fading for 5-7 years under normal conditions. Powder coating provides the most durable colored finish option.

Do you carry hard-to-find parts for discontinued Western Star models?

Yes, we maintain inventory for many discontinued models including the Heritage Classic, older 4900 variants, and pre-2005 4800 series trucks. Our network includes specialized manufacturers who produce limited runs of obsolete parts. If a part is not listed on our website, our parts specialists can often source it through our supplier network or recommend compatible alternatives that have been successfully used by other Western Star owners.


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