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Western Star Truck Parts

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 2880 Slack Reducing Coupling

    2880 Slack Reducing Coupling

    PREMIER

    $1,415.99
    2880 Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 150000 Lbs.* Max. Tongue Weight 30000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100679
    SKU:
    09-051100679
    Rating:
    150000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,415.99
    Qty in Cart: 0
    Price:
    $1,415.99
    Subtotal:
  • 2400HEL Slack Reducing Coupling Kit

    2400HEL Slack Reducing Coupling Kit

    PREMIER

    $1,149.99
    2400HEL Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Kit Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000...
    09-051100678
    SKU:
    09-051100678
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,149.99
    Qty in Cart: 0
    Price:
    $1,149.99
    Subtotal:
  • 2400HEL Slack Reducing Coupling

    2400HEL Slack Reducing Coupling

    PREMIER

    $1,000.99
    2400HEL Slack Reducing Coupling* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section...
    09-051100677
    SKU:
    09-051100677
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,000.99
    Qty in Cart: 0
    Price:
    $1,000.99
    Subtotal:
  • 2400H Slack Reducing Coupling Kit

    2400H Slack Reducing Coupling Kit

    PREMIER

    $975.99
    2400H Slack Reducing Coupling* High Quality Reducing Coupling Kit* Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs.* Max...
    09-051100676
    SKU:
    09-051100676
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $975.99
    Qty in Cart: 0
    Price:
    $975.99
    Subtotal:
  • 2400H Slack Reducing Coupling

    2400H Slack Reducing Coupling

    PREMIER

    $817.99
    2400H Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs. * Max. Eye X-Section 1-13/16...
    09-051100675
    SKU:
    09-051100675
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $817.99
    Qty in Cart: 0
    Price:
    $817.99
    Subtotal:
  • 2400ELA Slack Reducing Coupling Kit

    2400ELA Slack Reducing Coupling Kit

    PREMIER

    $1,125.99
    2400ELA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs...
    09-051100674
    SKU:
    09-051100674
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,125.99
    Qty in Cart: 0
    Price:
    $1,125.99
    Subtotal:
  • 2400EL Slack Reducing Coupling

    2400EL Slack Reducing Coupling

    PREMIER

    $970.99
    2400EL Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100673
    SKU:
    09-051100673
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $970.99
    Qty in Cart: 0
    Price:
    $970.99
    Subtotal:
  • 2400A Slack Reducing Coupling Kit

    2400A Slack Reducing Coupling Kit

    PREMIER

    $995.99
    2400A Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs.*...
    09-051100672
    SKU:
    09-051100672
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $995.99
    Qty in Cart: 0
    Price:
    $995.99
    Subtotal:
  • 2400 Slack Reducing Coupling

    2400 Slack Reducing Coupling

    PREMIER

    $770.99
    2400 Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100671
    SKU:
    09-051100671
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $770.99
    Qty in Cart: 0
    Price:
    $770.99
    Subtotal:
  • 2300ELA Slack Reducing Coupling Kit

    2300ELA Slack Reducing Coupling Kit

    PREMIER

    $1,077.99
    2300ELA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs...
    09-051100670
    SKU:
    09-051100670
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,077.99
    Qty in Cart: 0
    Price:
    $1,077.99
    Subtotal:
  • 2300EL Slack Reducing Coupling W/ Extended Life Latch

    2300EL Slack Reducing Coupling W/ Extended Life Latch

    PREMIER

    $916.99
    2300EL Slack Reducing Coupling W/ Extended Life Latch* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.*...
    09-051100669
    SKU:
    09-051100669
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $916.99
    Qty in Cart: 0
    Price:
    $916.99
    Subtotal:
  • 2300 Slack Reducing Coupling Kit

    2300 Slack Reducing Coupling Kit

    PREMIER

    $928.99
    2300 Slack Reducing Coupling Kit* High Quality Slack Reducing Coupling Kit* Includes:  - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket - Thimble* Max. Gross Trailer Weight 100000...
    09-051100668
    SKU:
    09-051100668
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $928.99
    Qty in Cart: 0
    Price:
    $928.99
    Subtotal:
  • 2300 Slack Reducing Coupling

    2300 Slack Reducing Coupling

    PREMIER

    $709.99
    2300 Slack Reducing Coupling* High Quality Slack Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section...
    09-051100667
    SKU:
    09-051100667
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Location:
    Made In USA
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $709.99
    Qty in Cart: 0
    Price:
    $709.99
    Subtotal:
  • Low Lever Part Replacement Kit For 2200ELL Coupling

    Low Lever Part Replacement Kit For 2200ELL Coupling

    PREMIER

    $324.99
    Replacement Part Kit W/ Retaining Rings, Locknut, Spacers, Bolt, Springs, Latch & Latch Hook* High Quality Replacement Parts Kit * Includes:  - Retaining Rings - Locknut - Spacers - Bolt - Springs -...
    09-051100666
    SKU:
    09-051100666
    Location:
    Made In USA
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $324.99
    Qty in Cart: 0
    Price:
    $324.99
    Subtotal:
  • Slack Reducing Coupling Kit W/ Bolt Kit, Air Chamber, Adapter Bracket, & Thimble

    Slack Reducing Coupling Kit W/ Bolt Kit, Air Chamber, Adapter Bracket, & Thimble

    PREMIER

    $1,005.99
    Extended Life Reducing Coupling* High Quality Slack Reducing Coupling Kit* Includes:   - 2200Ell Coupling  - 501 Bolt Kit  - 281 Air Chamber  - 267 Air Chamber Adapter Bracket   - 271 Thimble* Max...
    09-051100665
    SKU:
    09-051100665
    Location:
    Made In USA
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,005.99
    Qty in Cart: 0
    Price:
    $1,005.99
    Subtotal:
  • 2200ELL Slack Reducing Coupling

    2200ELL Slack Reducing Coupling

    PREMIER

    $852.99
    2200ELL Slack Reducing Coupling* High Quality Reducing Coupling* Coupling Only * With 2075 Low Profile Lever Installed* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate...
    09-051100664
    SKU:
    09-051100664
    Location:
    Made In USA
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $852.99
    Qty in Cart: 0
    Price:
    $852.99
    Subtotal:
  • 2200ELA Slack Reducing Coupling Kit

    2200ELA Slack Reducing Coupling Kit

    PREMIER

    $1,000.99
    2200ELA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket - Thimble* Max. Gross Trailer Weight 100000 Lbs.*...
    09-051100663
    SKU:
    09-051100663
    Location:
    Made In USA
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $1,000.99
    Qty in Cart: 0
    Price:
    $1,000.99
    Subtotal:
  • 2200EL Slack Reducing Coupling

    2200EL Slack Reducing Coupling

    PREMIER

    $799.99
    2200EL Slack Reducing Coupling* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100662
    SKU:
    09-051100662
    Location:
    Made In USA
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $799.99
    Qty in Cart: 0
    Price:
    $799.99
    Subtotal:
  • 2200LA Slack Reducing Coupling Kit

    2200LA Slack Reducing Coupling Kit

    PREMIER

    $840.99
    2200LA Slack Reducing Coupling Kit* High Quality Reducing Coupling Kit* Includes: - Coupling - Bolt Kit - Air Chamber - Air Chamber Adapter Bracket  - Thimble* Max. Gross Trailer Weight 100000 Lbs.*...
    09-051100661
    SKU:
    09-051100661
    Location:
    Made In USA
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $840.99
    Qty in Cart: 0
    Price:
    $840.99
    Subtotal:
  • 2200L Slack Reducing Coupling Kit

    2200L Slack Reducing Coupling Kit

    PREMIER

    $674.99
    2200L Slack Reducing Coupling Kit* High Quality Reducing Coupling* Max. Gross Trailer Weight 100000 Lbs.* Max. Tongue Weight 20000 Lbs.* Ultimate Latch Capacity 60000 Lbs.* Max. Eye X-Section 1-13/16...
    09-051100660
    SKU:
    09-051100660
    Location:
    Made In USA
    Rating:
    100000 LBS
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $674.99
    Qty in Cart: 0
    Price:
    $674.99
    Subtotal:
  • Total: items /

Adding your products to cart

Tough jobs call for tough trucks. And when your Western Star needs parts, you want upgrades that can keep up. Whether you're driving a 4700 series, 4900, or the sleek 5700XE, we’ve got the aftermarket parts to match your truck’s power and personality.

Why Buy Aftermarket Western Star Parts?

- Save money over OEM without sacrificing quality - Upgrade performance with improved durability and function. - Customize your rig inside and out for comfort, style, or branding. - Stay DOT-compliant with lighting, mirrors, and safety upgrades. These parts aren’t just about replacing the old stuff. They’re about boosting what your truck can do—and how good it looks doing it.

Get the Job Done—And Look Good Doing It

We carry Western Star exterior and interior parts built for hard-working trucks. From rugged 5700xe truck bumpers to stylish chrome trim, our components are designed to perform under pressure—and turn heads while doing it. Need replacement parts to stay road-ready? We’ve got them. Want to customize your ride with aftermarket accessories or truck headlights that reflect your brand? You’ll find those here too.

Built for Fleets, Shops & Owner-Ops

Whether you’re wrenching in your shop or managing a fleet, 4 State makes it easy to shop Western Star truck components. Our inventory fits a wide range of models and job needs—from long-haul comfort upgrades to workhorse body parts built for logging, oilfield, or construction routes. We stock: - Cab and sleeper parts. - Engine and performance components. - Lights, visors, fenders, hoods, grilles, and more.

Let’s Get You Back on the Road

We know downtime costs money. That’s why we make it easy to shop Western Star parts online—fast shipping, expert support, and a huge selection of heavy-duty commercial truck parts ready to roll. Ready to make your rig better than new?

Frequently Asked Questions About Western Star Truck Parts

What year models do your Western Star replacement parts fit, and how can I verify compatibility?

Our Western Star parts are designed to fit specific model years and configurations. Most aftermarket parts cover models from 2002 to present, including the 4700, 4800, 4900, and 5700 series. To verify compatibility, check your OEM number and compare it with the fitment details listed on each product page. If you're unsure, contact our support team with your truck's year, model, and OEM - we'll confirm the exact fit before you order.

Are these genuine OEM Western Star parts or aftermarket alternatives?

We carry both OEM and high-quality aftermarket Western Star parts. Aftermarket options typically offer 30-50% savings while maintaining durability standards. Our aftermarket parts are manufactured from grade 304 stainless steel or heavy-duty chrome-plated steel, matching or exceeding OEM specifications. Each product listing clearly indicates whether it's OEM or aftermarket, along with material specifications and warranty details.

What tools and expertise do I need to install Western Star bumpers and exterior parts?

Most bumper installations require basic hand tools including socket sets, wrenches, and a torque wrench. Typical installation takes 2-4 hours for experienced mechanics. Bumpers usually mount using existing frame holes, though some models may require drilling. We recommend having a second person assist with heavy components like bumpers. Professional installation runs $200-500 depending on complexity. All parts include detailed instructions, and our tech support can walk you through any challenges.

What's the difference between chrome, stainless steel, and painted finishes for longevity?

Stainless steel offers the best corrosion resistance and typically lasts 10-15 years without pitting or rust. Chrome-plated steel provides excellent shine but may show wear after 5-7 years in harsh conditions. Painted finishes are most affordable but require touch-ups every 3-5 years. For trucks operating in salt-heavy regions, we strongly recommend stainless steel. Chrome works well for moderate climates with regular washing and maintenance.

Do your Western Star parts come with mounting hardware and warranties?

Yes, all bumpers and major components include necessary mounting hardware unless specifically noted. Standard warranties range from 1 year for chrome parts to 3 years for stainless steel components, covering defects in materials and workmanship. Electrical components typically carry 90-day warranties. Keep your receipt and register products online for faster warranty service. Note that warranties don't cover damage from improper installation or road hazards.


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