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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
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  • Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    Piston Style Type 18/24 Disc Brake Replaces K025670, MJB1824DT051, 745K025670

    AFTERMARKET

    $317.99
    10.120 Inch Piston Style Type 18/24 Disc Brake W/ 2.5 Inch Stroke LengthAchieve reliable and precise braking with this Piston Style Type 18/24 Disc Brake. Features a 2.5-inch stroke length, two top...
    29-05170029
    SKU:
    29-05170029
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $317.99
    Qty in Cart: 0
    Price:
    $317.99
    Subtotal:
  • Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    Knuckle Spacer Replaces 005881, R-005881 For Hendrickson-Turner Suspension

    AFTERMARKET

    $104.99
    2.562 Inch Knuckle Spacer Used On Hendrickson Turner Lift AxleUpgrade your suspension service with a knuckle spacer built for heavy-duty reliability. Replacement for 005881 and R-005881, this...
    29-05250040
    SKU:
    29-05250040
    Product Type:
    Exterior
    Make:
    Universal Items
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • Radius Arm Bushing Replaces K201635

    Radius Arm Bushing Replaces K201635

    AFTERMARKET

    $58.99
    Radius Arm Bushing Fits Rear Wheel Drive Models OnlyMinimize suspension wear and improve ride quality with a high-quality radius arm bushing. Designed to replace K201635, this bushing is engineered...
    29-05250030
    SKU:
    29-05250030
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $58.99
    Qty in Cart: 0
    Price:
    $58.99
    Subtotal:
  • Upper Rear Shock Bracket Replaces 57322003, 57322-003 For Hendrickson Suspension

    Upper Rear Shock Bracket Replaces 57322003, 57322-003 For Hendrickson Suspension

    AFTERMARKET

    $39.57
    Hendrickson Suspension Upper Rear Shock BracketSecure your rear suspension with a shock bracket engineered for strength and reliability. This high-quality Upper Rear Shock Bracket for Hendrickson...
    29-05250039
    SKU:
    29-05250039
    Position:
    Upper
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $39.57
    Qty in Cart: 0
    Price:
    $39.57
    Subtotal:
  • 15 X 4 Inch Brake Kit Replaces E4702KITB, E4702KT, E9064, E9064SHD, CQ65642, KIT8824HD, MKT4702KT, R508824, 66A

    15 X 4 Inch Brake Kit Replaces E4702KITB, E4702KT, E9064, E9064SHD, CQ65642, KIT8824HD, MKT4702KT, R508824, 66A

    AUTOMANN USA

    $17.81
    Brake Kit For 15 Inch x 4 Inch Unlined Brake ShoesKeep your brakes operating at peak efficiency with this 15 X 4 Inch Brake Kit. Complete kit includes rollers, anchor pins, bushings, coil springs,...
    29-05170021
    SKU:
    29-05170021
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $17.81
    Qty in Cart: 0
    Price:
    $17.81
    Subtotal:
  • Spigot Cap Replaces 260002, E4680, R304680 For Chalmers Suspension

    Spigot Cap Replaces 260002, E4680, R304680 For Chalmers Suspension

    AFTERMARKET

    $81.99
    0.75 Inch ID X 3.75 Inch OD Spigot CapMaintain proper alignment and prevent premature wear with a premium spigot cap. Designed for Chalmers suspension systems, this replacement part fits 260002,...
    29-05250028
    SKU:
    29-05250028
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $81.99
    Qty in Cart: 0
    Price:
    $81.99
    Subtotal:
  • Pivot Bushing Kit Replaces 0095061, R0095061

    Pivot Bushing Kit Replaces 0095061, R0095061

    AUTOMANN USA

    $758.99
    Pivot Bushing Used On Hendrickson Turner Lift AxleBring worn pivot points back to proper working condition with a complete bushing kit. This high-quality replacement kit includes all required...
    29-05200033
    SKU:
    29-05200033
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $758.99
    Qty in Cart: 0
    Price:
    $758.99
    Subtotal:
  • 2.25 Inch U- Joint Replaces 150635R91, 150635R92, 5092X, 592X, 5-92X

    2.25 Inch U- Joint Replaces 150635R91, 150635R92, 5092X, 592X, 5-92X

    AUTOMANN USA

    $21.61
    2.25 Inch U- Joint- L6N SeriesEnsure smooth and efficient driveline operation with a U-joint engineered for heavy-duty use. This 2.25 Inch U-Joint, L6N series with inside snap ring design, includes a...
    29-05210000
    SKU:
    29-05210000
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $21.61
    Qty in Cart: 0
    Price:
    $21.61
    Subtotal:
  • 16.5 X 7 Inch Brake Kit Replaces E10244, E4709EX, CQ65477, MKT4709ES2, R507064

    16.5 X 7 Inch Brake Kit Replaces E10244, E4709EX, CQ65477, MKT4709ES2, R507064

    AUTOMANN USA

    $8.55
    Brake Kit For Eaton 16.5 Inch x 7 Inch BrakesEnsure smooth and reliable brake operation with this 16.5 X 7 Inch Brake Kit for Eaton brakes. Featuring two rollers, two springs, a larger spring, and...
    29-051700026
    SKU:
    29-051700026
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $8.55
    Qty in Cart: 0
    Price:
    $8.55
    Subtotal:
  • King Pin Kit Replaces 15585841, 370904088, 370905022, 597258C91, 85125838, KIT1312, KP2748, KPK1116, R201312, R201339, SP621590, SRK-105, V1110083 For International, Chevrolet/GMC

    King Pin Kit Replaces 15585841, 370904088, 370905022, 597258C91, 85125838, KIT1312, KP2748, KPK1116, R201312, R201339, SP621590, SRK-105, V1110083 For International, Chevrolet/GMC

    AFTERMARKET

    $331.99
    King Pin Kit W/ 1.999 X 11.21 Inch King Pin & Composite BushingsOptimize your truck's steering system with this King Pin Kit. This kit includes opposite double draw key king pins, composite bushings,...
    29-05200009
    SKU:
    29-05200009
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $331.99
    Qty in Cart: 0
    Price:
    $331.99
    Subtotal:
  • King Pin Kit Replaces 003200, 1400738, R-003200, 003270, 1145696, R-003270 For Hendrickson Aux Suspension Systems

    King Pin Kit Replaces 003200, 1400738, R-003200, 003270, 1145696, R-003270 For Hendrickson Aux Suspension Systems

    AFTERMARKET

    $497.99
    King Pin Kit W/ 1.810 X 9.570 Inch King Pin & Bi-Metal BushingsSteering control and suspension longevity start with properly fitted king pins. This Hendrickson auxiliary suspension king pin kit...
    29-05200012
    SKU:
    29-05200012
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $497.99
    Qty in Cart: 0
    Price:
    $497.99
    Subtotal:
  • King Pin Kit Replaces 010300, 1469753, R010300, R-010300 For Hendrickson Aux Suspension Systems

    King Pin Kit Replaces 010300, 1469753, R010300, R-010300 For Hendrickson Aux Suspension Systems

    AFTERMARKET

    $528.99
    King Pin Kit W/ 1.813 X 9.55 Inch King Pin & Bi-Metal BushingsUpgrade worn suspension components with a king pin kit engineered for precision and strength. This kit for Hendrickson auxiliary...
    29-05200011
    SKU:
    29-05200011
    Position:
    Kit Full
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $528.99
    Qty in Cart: 0
    Price:
    $528.99
    Subtotal:
  • 16.50 X 7.00 Inch 20K Brake Shoe Box Kit

    16.50 X 7.00 Inch 20K Brake Shoe Box Kit

    AFTERMARKET

    $164.99
    20K Brake Shoe Box Kit- 16.50 X 7.00 InchHeavy loads demand braking components that won't back down. This 16.50 x 7.00 Inch Brake Shoe Box Kit is engineered for 20K axle applications and includes two...
    29-05170024
    SKU:
    29-05170024
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $164.99
    Qty in Cart: 0
    Price:
    $164.99
    Subtotal:
  • 6 Inch Slack Adjuster- Haldex Self-Setting Type Replaces E11924, 40920025, 40020214, 569640020214, M808001

    6 Inch Slack Adjuster- Haldex Self-Setting Type Replaces E11924, 40920025, 40020214, 569640020214, M808001

    AFTERMARKET

    $155.99
    6 Inch Automatic Haldex Self-Setting Type- 1.625 Inch-37 SplineAchieve precise braking control with this 6 Inch Slack Adjuster - Haldex Self-Setting Type. Designed for Fruehauf trailer axles with 16...
    29-05170025
    SKU:
    29-05170025
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $155.99
    Qty in Cart: 0
    Price:
    $155.99
    Subtotal:
  • 6 Inch Slack Adjuster- Gunite Type Replaces E15056, AS1173, SA11903, 25QD419P4, 20714928

    6 Inch Slack Adjuster- Gunite Type Replaces E15056, AS1173, SA11903, 25QD419P4, 20714928

    AFTERMARKET

    $98.99
    6 Inch Automatic Gunite Type Slack Adjuster- 1.50 Inch-28 SplineAchieve smooth, automatic brake adjustment with this 6 Inch Slack Adjuster - Gunite Type. Engineered for welded clevis chambers with 1...
    29-05170019
    SKU:
    29-05170019
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $98.99
    Qty in Cart: 0
    Price:
    $98.99
    Subtotal:
  • Bushing Tool Replaces AL800089, 8080089, 34013087L, 34013088, 34013088L For Hendrickson Suspension

    Bushing Tool Replaces AL800089, 8080089, 34013087L, 34013088, 34013088L For Hendrickson Suspension

    AFTERMARKET

    $905.99
    Hendrickson Suspension Bushing ToolEnsure efficient suspension service with this high-quality Bushing Tool for Hendrickson, replacing AL800089, 8080089, 34013087L, 34013088, and 34013088L. Compatible...
    29-05100270
    SKU:
    29-05100270
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $905.99
    Qty in Cart: 0
    Price:
    $905.99
    Subtotal:
  • 16.50 X 5.00 Inch Brake Drum Replaces 9002X, 2603638C1, 53-123627-002, 53-123816-002, 53123627002, 53123816002, 600001

    16.50 X 5.00 Inch Brake Drum Replaces 9002X, 2603638C1, 53-123627-002, 53-123816-002, 53123627002, 53123816002, 600001

    AFTERMARKET

    $433.99
    16.50 X 5.00 Inch 10 Hole Brake DrumKeep your brakes performing at their best with this 16.50 X 5.00 Inch Brake Drum. Built with a steel shell, fused gray iron liner, and ten 1.28-inch bolt holes,...
    29-05170015
    SKU:
    29-05170015
    Product Type:
    Frame & Chassis
    Material Options:
    Steel
    Make:
    Universal Items
    $433.99
    Qty in Cart: 0
    Price:
    $433.99
    Subtotal:
  • 16.50 X 7.00 Inch 23K Brake Shoe Box Kit

    16.50 X 7.00 Inch 23K Brake Shoe Box Kit

    AFTERMARKET

    $141.99
    23K Brake Shoe Box Kit- 16.50 X 7.00 InchAchieve reliable brake operation with this high-quality 16.50 X 7.00 Inch 23K Brake Shoe Box Kit. Kit components include dual-webbed brake shoes, 68 rivets,...
    29-05170016
    SKU:
    29-05170016
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $141.99
    Qty in Cart: 0
    Price:
    $141.99
    Subtotal:
  • 16.5 Inch Brake Kit Replaces E2769HD, E4515QHD, S21183, 8000HD, R508001BK, 4515Q

    16.5 Inch Brake Kit Replaces E2769HD, E4515QHD, S21183, 8000HD, R508001BK, 4515Q

    AUTOMANN USA

    $14.90
    Brake Kit For Meritor 16.5 Inch Q BrakesKeep your truck stopping safely with this durable 16.5 Inch Brake Kit. Built for Meritor 16.5 Inch Q Brakes, it includes rollers, anchor pins, anchor pin...
    29-051700025
    SKU:
    29-051700025
    Product Type:
    Frame & Chassis
    Position:
    Kit Full
    Make:
    Universal Items
    $14.90
    Qty in Cart: 0
    Price:
    $14.90
    Subtotal:
  • Height Control Valve Replaces 59899000, 59899000L, 20QE4165AM, 20QE4165M, 25168691

    Height Control Valve Replaces 59899000, 59899000L, 20QE4165AM, 20QE4165M, 25168691

    AUTOMANN USA

    $55.99
    Height Control Valve- 90 PSI Working Pressure, 130 PSI Maximum PressureTake control of your truck's suspension with this high-quality Height Control Valve. Complete with dump valve and hose, it...
    29-05100586
    SKU:
    29-05100586
    Product Type:
    Frame & Chassis
    Make:
    Universal Items
    $55.99
    Qty in Cart: 0
    Price:
    $55.99
    Subtotal:
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Adding your products to cart

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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