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
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Price
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BESTfit 7-5 Inch I.D. Exhaust Reducer

BESTFIT TRUCK PARTS

MSRP:

$62.99

Was:

7-5 Inch Aluminized Exhaust Reducer By BESTfitMaintain reliable exhaust performance with the BESTfit 7-5 Inch I.D. Exhaust Reducer. Made from durable aluminized steel, it offers an 8-inch height and...

09-080100601

SKU:

09-080100601

Material Options:

Aluminum

Diameter Options:

7 To 5 Inch

Product Type:

Exhaust

Make:

Universal Items

MSRP:

$62.99

Was:

Qty in Cart: 0

Price:

MSRP:

$62.99

Was:

Subtotal:
Black Aluminum Flat Top Brake Knob W/ CSM Logo Engraved

TWISTED SHIFTERZ

MSRP:

$84.99

Was:

CSM Logo Black Aluminum Flat Top Brake KnobCustomize your truck cab with the Black Aluminum Flat Top Brake Knob featuring the engraved CSM logo. This high-quality aluminum knob is built for strength,...

09-15130960

SKU:

09-15130960

Product Type:

Interior

Make:

Universal Items

MSRP:

$84.99

Was:

Qty in Cart: 0

Price:

MSRP:

$84.99

Was:

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BESTfit 6-5 ID X 96 Inch Chrome Curve Top Stack

BESTFIT TRUCK PARTS

MSRP:

$695.00

Was:

6-5 ID X 96 Inch Curve Top Stack By BESTfitAchieve smooth and efficient exhaust flow with the BESTfit 6-5 ID x 96 Inch Chrome Curve Top Stack. Made from chrome-plated steel for heavy-duty durability,...

09-086596172

SKU:

09-086596172

Product Type:

Exhaust

Finish Options:

Chrome-Plated

Material Options:

Steel

Diameter Options:

6 To 5 Inch

Height Options:

96 Inch

Position:

Lower

Style Options:

Curve Turn

Make:

Universal Items

MSRP:

$695.00

Was:

Qty in Cart: 0

Price:

MSRP:

$695.00

Was:

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FREE SHIPPING

18 X 13 X 23 Inch Aluminum In- Frame Battery Box W/ Latch

AFTERMARKET

MSRP:

$524.99

Was:

Aluminum In- Frame Battery Box W/ Diamond Plate Lid & Latch- 18 X 13 X 23 InchEnsure reliable battery storage and protection with the 18 x 13 x 23 Inch Aluminum In-Frame Battery Box with Latch...

09-0501002

SKU:

09-0501002

Product Type:

Frame & Chassis

Make:

Universal Items

MSRP:

$524.99

Was:

Qty in Cart: 0

Price:

MSRP:

$524.99

Was:

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CSM Tank Chair Or Couch Cushion

CHROME SHOP MAFIA

MSRP:

$142.99

Was:

Choose Option(s) to see description.CSM Tank Chair Or Couch Bottom CushionBottom Cushion For CSM Tank Chair Or CouchAdd comfort and style back to your seating setup with this CSM Tank Chair or Couch...

PPR_300371

SKU:

PPR_300371

Product Type:

Apparel

Make:

Universal Items

Color:

Black

Location:

Made In USA

MSRP:

$142.99

Was:

Qty in Cart: 0

Price:

MSRP:

$142.99

Was:

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Powder Coated Steel Power Drill Organizer Bracket

JONES MFG

MSRP:

Now: $25.90 - $46.90

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksPowder Coated Steel 2 Bay Power Drill Organizer Bracket2 Bay Power Drill Organizer BracketMaximize...

PPR_300370

SKU:

PPR_300370

Length Options:

14 Inch

Product Type:

Cargo Control

Finish Options:

Black Powder Coat

Length Options:

6 1/2 Inch

Width Options:

5 Inch

Height Options:

1 1/2 Inch

Material Options:

Steel

Make:

Universal Items

MSRP:

Now: $25.90 - $46.90

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $25.90 - $46.90

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Stop, Turn, Tail Box LED Light

AUTOMANN USA

MSRP:

Now: $81.99 - $83.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksStop, Turn, Tail Box LED Light- Driver Side Replaces 53640Driver Side Stop, Turn, Tail Box LED Light- 3...

PPR_300366

SKU:

PPR_300366

Color:

Red/White

Position:

Driver Side

Height Options:

3 Inch

Width Options:

5 3/4 Inch

Length Options:

6 3/4 Inch

Position:

Passenger Side

Product Type:

Lighting

Material Options:

Plastic/Poly

Style Options:

Black Housing

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $81.99 - $83.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $81.99 - $83.99

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36 Inch Blue Poly Coolant Hose

AUTOMANN USA

MSRP:

Now: $71.99 - $76.99

Was:

Replace worn or cracked hoses with this high-quality 36-inch Blue Poly Coolant Hose, available in 2.50-inch and 3-inch diameters. They are made from resilient poly material for superior durability...

PPR_300363

SKU:

PPR_300363

Diameter Options:

3 Inch

Style Options:

Sleeve

Material Options:

Silicone

Length Options:

36 Inch

Color:

Blue

Diameter Options:

2 1/2 Inch

Product Type:

Engine Parts

Make:

Universal Items

Material Options:

Polyester

MSRP:

Now: $71.99 - $76.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $71.99 - $76.99

Was:

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Nylon Hose Connector- 5 Pack

AFTERMARKET

MSRP:

Now: $10.51 - $12.34

Was:

Choose Option(s) to see description.1/2 Inch Nylon Hose Connector- 5 Pack Replaces 65623, 286031/2 Inch Hose Connector- 5 PackEnsure your fluid systems operate efficiently with the 1/2 Inch Nylon...

PPR_300369

SKU:

PPR_300369

Material Options:

Nylon

Length Options:

1/2 Inch

Product Type:

Cargo Control

Length Options:

5/8 Inch

Make:

Universal Items

MSRP:

Now: $10.51 - $12.34

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $10.51 - $12.34

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Drive Axle Flange Gasket W/ Size Options

AUTOMANN USA

MSRP:

Now: $1.98 - $2.02

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksDrive Axle Flange Gasket Replaces 6823, R002431, 7284, 476075, 7167435.625 ID X 8.50 OD 8 Hole Drive...

PPR_300362

SKU:

PPR_300362

Diameter Options:

8 1/2 Inch

Product Type:

Wheels

Make:

Universal Items

MSRP:

Now: $1.98 - $2.02

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $1.98 - $2.02

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Multi V - Serpentine Belt

AFTERMARKET

MSRP:

Now: $31.95 - $115.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksMulti V - 6 Rib Serpentine Belt 51.50 Inch Replaces 4060515, 3579001C151.50 Inch Multi V- Serpentine...

PPR_300368

SKU:

PPR_300368

Length Options:

89 Inch

Product Type:

Engine Parts

Length Options:

51 1/2 Inch

Length Options:

52 Inch

Make:

Universal Items

MSRP:

Now: $31.95 - $115.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $31.95 - $115.99

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4-Inch Flex Tubing

AFTERMARKET

MSRP:

Now: $32.31 - $56.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks4 X 18 Inch Black Stainless Steel Flex Tubing Replaces SF418, P2065544 X 18 Inch Black 304 Stainless...

PPR_300364

SKU:

PPR_300364

Length Options:

18 Inch

Product Type:

Exhaust

Diameter Options:

4 Inch

Color:

Black

Material Options:

Stainless Steel

Length Options:

24 Inch

Finish Options:

Galvanized

Material Options:

Steel

Make:

Universal Items

MSRP:

Now: $32.31 - $56.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $32.31 - $56.99

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On Sale

Limited Quantity Available

14-16 Gauge Terminal- 56 Series

OPP - ORIGINAL PARTS PROGRAM

MSRP:

Now: $0.25

Was: $0.36

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks14-16 Gauge Female Terminal - 56 Series14-16 Gauge Female TerminalThe 14-16 Gauge Female Terminal - 56...

PPR_300353

SKU:

PPR_300353

Product Type:

Lighting

Size Options:

16 Gauge

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $0.25

Was: $0.36

Qty in Cart: 0

Price:

MSRP:

Now: $0.25

Was: $0.36

Subtotal:
Female Hose End

AUTOMANN USA

MSRP:

Now: $10.17 - $26.59

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksFemale 13/32 X 1/2 Inch Hose End Replaces 24708N608, 206208813/32 X 1/2 Inch Female Hose End* High...

PPR_300361

SKU:

PPR_300361

Product Type:

Air, Electrical, & Safety

Make:

Universal Items

MSRP:

Now: $10.17 - $26.59

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $10.17 - $26.59

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Fiberglass Full Radius Fender With Lip

SHIFT PRODUCTS

MSRP:

Now: $1,298.99 - $1,463.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksFiberglass Full Radius Fender With 1 Inch LipFull Radius Fender With 1 Inch Lip- 36 Inch HeightProtect...

PPR_300360

SKU:

PPR_300360

Material Options:

Fiberglass

Product Type:

Rear Fenders

Style Options:

Single Axle

Height Options:

36 Inch

Make:

Universal Items

MSRP:

Now: $1,298.99 - $1,463.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $1,298.99 - $1,463.99

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CSM 101 Inch Polished 304 Stainless Steel Full Fenders

CHROME SHOP MAFIA

MSRP:

Now: $2,249.99 - $2,306.99

Was:

Take your rig's exterior to show-level quality with the CSM 101 Inch Stainless Steel Full Fender lineup from Chrome Shop Mafia, built for drivers who want unbeatable shine and dependable durability...

PPR_299975

SKU:

PPR_299975

Product Type:

Rear Fenders

Length Options:

144 Inch

Size Options:

14 Gauge

Location:

Made In USA

Material Options:

Stainless Steel

Make:

Universal Items

Type Options:

Full Fender

Style Options:

Quilted

Ready To Ship:

Yes

MSRP:

Now: $2,249.99 - $2,306.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $2,249.99 - $2,306.99

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Red Satin Airway Buffing Wheel For Angle Grinders

AFTERMARKET

MSRP:

Now: $38.58 - $45.02

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks10 Inch Red Airway Buffing Wheel For Angle Grinders10 Inch Red Airway Buffing WheelThe 9 Inch White...

PPR_300349

SKU:

PPR_300349

Diameter Options:

9 Inch

Diameter Options:

10 Inch

Product Type:

Polishing

Color:

Red

Make:

Universal Items

Shape Options:

Round

MSRP:

Now: $38.58 - $45.02

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $38.58 - $45.02

Was:

Subtotal:
Chrome Plated Aluminum Front Oiler Cap Cover W/ Window

LIFETIME NUT COVERS

MSRP:

Now: $639.99 - $705.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksChrome Plated Aluminum Front Oil Cap Cover W/ Teal WindowFront Oil Cap Cover W/ Teal Window & 6 4 1/2...

PPR_300344

SKU:

PPR_300344

Finish Options:

Chrome-Plated

Material Options:

Billet Aluminum

Make:

Universal Items

Color:

Blue

Position:

Front

Location:

Made In USA

Product Type:

Wheels

Color:

Red

Color:

Clear

Color:

Teal

Style Options:

Smooth

MSRP:

Now: $639.99 - $705.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $639.99 - $705.99

Was:

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White Airway Buffing Wheel For Use On Aluminum And Stainless Steel

AFTERMARKET

MSRP:

Now: $17.23 - $18.96

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks10 Inch White Airway Buffing Wheel For Use On Aluminum And Stainless Steel10 Inch White Airway Buffing...

PPR_300345

SKU:

PPR_300345

Diameter Options:

10 Inch

Color:

White

Product Type:

Polishing

Diameter Options:

9 Inch

Make:

Universal Items

Shape Options:

Round

MSRP:

Now: $17.23 - $18.96

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $17.23 - $18.96

Was:

Subtotal:
Mag N Wire Wheel Acid

AFTERMARKET

MSRP:

Now: $32.57 - $94.99

Was:

Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksMag N Wire Wheel Acid- 5 GallonMag N Wire Wheel AcidMaintain your wheels in pristine condition with Mag...

PPR_300350

SKU:

PPR_300350

Product Type:

Polishing

Capacity:

5 Gallons

Capacity:

1 Gallon

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

Now: $32.57 - $94.99

Was:

Qty in Cart: 0

Price:

MSRP:

Now: $32.57 - $94.99

Was:

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.