null

Western Star Truck Parts

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 58 Quart Oil Drain Pan - 39.50 X 24 X 8 Inch

    58 Quart Oil Drain Pan - 39.50 X 24 X 8 Inch

    AUTOMANN USA

    $231.99
    39.50 X 24 X 8 Inch 58 Quart Oil Drain PanThe 58 Quart Oil Drain Pan combines heavy-duty construction with high-volume capacity, measuring 39.50 x 24 x 8 inches. Designed to withstand the demands of...
    09-07200001
    SKU:
    09-07200001
    Truck Class:
    Heavy Duty
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $231.99
    Qty in Cart: 0
    Price:
    $231.99
    Subtotal:
  • BESTfit Oil Pan Isolator Seal Gasket For Caterpillar C15 & Late 3406E Engines

    BESTfit Oil Pan Isolator Seal Gasket For Caterpillar C15 & Late 3406E Engines

    BESTFIT TRUCK PARTS

    $119.99
    BESTfit Diesel CAT C15 & Late 3406E Oil Pan GasketMade of HNBR rubber, this oil pan gasket seal has a one piece design and can withstand service temperatures of -40 to 115C. It is resistant to fuel,...
    09-071685248
    SKU:
    09-071685248
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $119.99
    Qty in Cart: 0
    Price:
    $119.99
    Subtotal:
  • Thermoplastic Rear Sump Without Ports Oil Pan For Detroit Series 60 Engines

    Thermoplastic Rear Sump Without Ports Oil Pan For Detroit Series 60 Engines

    AFTERMARKET

    $655.99
    Plastic Oil Pan Fits Detroit 60 Series EnginesEnsure consistent oil flow and engine protection with the Thermoplastic Rear Sump Without Ports Oil Pan for Detroit Series 60 Engines. Built from...
    09-071200002
    SKU:
    09-071200002
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $655.99
    Qty in Cart: 0
    Price:
    $655.99
    Subtotal:
  • Torque Converter Outlet Oil Temperature Sensor Replaces 2566453

    Torque Converter Outlet Oil Temperature Sensor Replaces 2566453

    DAYTON / DORMAN

    $50.99
    -40 To 150 Degree Oil Temp SensorReplace worn sensors with the Torque Converter Outlet Oil Temperature Sensor. With a female irregular connector, male 2-blade terminal, and 0.75-inch fine threads,...
    09-0710002
    SKU:
    09-0710002
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $50.99
    Qty in Cart: 0
    Price:
    $50.99
    Subtotal:
  • FREE SHIPPING
    12 Volt 170 Amp 36 SI Hinge Mount Alternator

    12 Volt 170 Amp 36 SI Hinge Mount Alternator

    AUTOMANN USA

    $419.99
    Hinge Mount AlternatorDelivering consistent and reliable power to your truck's electrical system, the 12 Volt 170 Amp 36 SI Hinge Mount Alternator is built for performance and durability. With 170...
    09-070914
    SKU:
    09-070914
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $419.99
    Qty in Cart: 0
    Price:
    $419.99
    Subtotal:
  • FREE SHIPPING
    12 Volt 140 Amp 35 SI Hinge Mount Alternator

    12 Volt 140 Amp 35 SI Hinge Mount Alternator

    OPP - ORIGINAL PARTS PROGRAM

    $491.99
    J180 Hinge Mount Brush Alternator* High Quality Alternator* Replaces OEM # 8600064, ABP N15 BLJ160, MTRALT-3652, ALT-3652* 35 SI* 12 Volt * 140 AMP* J180 Hinge Mount Type* Sold Individually* Warranty...
    09-070912
    SKU:
    09-070912
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $491.99
    Qty in Cart: 0
    Price:
    $491.99
    Subtotal:
  • FREE SHIPPING
    12 Volt 160 Amp 24 SI Pad Mount Alternator

    12 Volt 160 Amp 24 SI Pad Mount Alternator

    AUTOMANN USA

    $276.99
    12 Volt Alternator Replaces 8600889, ABP N15 555P160, MTRALT-1242, ALT-1242Replace your old alternator with the 12 Volt 160 Amp 24 SI Pad Mount Alternator for reliable truck operation. This...
    09-070911
    SKU:
    09-070911
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $276.99
    Qty in Cart: 0
    Price:
    $276.99
    Subtotal:
  • FREE SHIPPING
    12 Volt 160 Amp 24 SI Hinge Mount Alternator

    12 Volt 160 Amp 24 SI Hinge Mount Alternator

    AUTOMANN USA

    $343.99
    Alternator* High Quality Alternator* Replaces OEM # 8600310, ABP N15 AVI143J170, MTRALT-1243, ALT-1243* 24 SI* 12 Volt * 160 AMP* J180 Hinge Mount Type* Sold Individually* Warranty On Alternator...
    09-070910
    SKU:
    09-070910
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $343.99
    Qty in Cart: 0
    Price:
    $343.99
    Subtotal:
  • 39MT 11 Tooth Starter With Over Crank Protection For Detroit Diesel DD13/15/16 Engines

    39MT 11 Tooth Starter With Over Crank Protection For Detroit Diesel DD13/15/16 Engines

    AUTOMANN USA

    $598.99
    12V Starter With Over Crank ProtectionKeep your Detroit Diesel DD13, DD15, and DD16 running smoothly with the 39MT 11 Tooth Starter with Over Crank Protection. Engineered for 12 volts, this starter...
    09-070904
    SKU:
    09-070904
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $598.99
    Qty in Cart: 0
    Price:
    $598.99
    Subtotal:
  • Starter Solenoid For Delco 42 MT Series

    Starter Solenoid For Delco 42 MT Series

    OPP - ORIGINAL PARTS PROGRAM

    $104.99
    Delco 42MT Series DD Starter Solenoid SwitchThis 12-volt starter solenoid switch is a groundbreaking solution precision engineered for the starting system of today's trucks and vehicles. It is...
    09-070900000
    SKU:
    09-070900000
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $104.99
    Qty in Cart: 0
    Price:
    $104.99
    Subtotal:
  • FREE SHIPPING
    Clutch Installation Kit For Fuller RT Transmission ABP N25 K2468

    Clutch Installation Kit For Fuller RT Transmission ABP N25 K2468

    OPP - ORIGINAL PARTS PROGRAM

    $271.99
    Clutch Install Kit* High Quality Clutch Install Kit* For Fuller RT Series Transmissions* Includes All The Wear Items And Gaskets * Kit Includes:  - S-1659 Input Shaft - 2 Inch  - 14750 Retaining Ring...
    09-0705019
    SKU:
    09-0705019
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $271.99
    Qty in Cart: 0
    Price:
    $271.99
    Subtotal:
  • FREE SHIPPING OVER $249
    BESTfit Poly Isolator With Steel Insert For Bottom Of Shift Stick Mounting

    BESTfit Poly Isolator With Steel Insert For Bottom Of Shift Stick Mounting

    BESTFIT TRUCK PARTS

    $36.51
    BESTfit Isolator W/ Steel Insert For Bottom Of Shift Stick* High Quality Isolator* Polyurethane* With Steel Insert* For Bottom Of Shift Stick Mounting* Sold Individually* Warranty On Isolator Against...
    09-0705017
    SKU:
    09-0705017
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Availability:
    Ready To Ship
    $36.51
    Qty in Cart: 0
    Price:
    $36.51
    Subtotal:
  • FREE SHIPPING OVER $249
    Cover Kit With Screws For Eaton-Fuller RTLO Transmissions - Replaces K2402

    Cover Kit With Screws For Eaton-Fuller RTLO Transmissions - Replaces K2402

    OPP - ORIGINAL PARTS PROGRAM

    $21.62
    Cover Kit for Eaton-Fuller RTLO TransmissionsThe Cover Kit with Screws for Eaton-Fuller RTLO Transmissions replaces OE Number K2402. Crafted to meet high industry standards and made from top-grade...
    09-0705013
    SKU:
    09-0705013
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Availability:
    Ready To Ship
    $21.62
    Qty in Cart: 0
    Price:
    $21.62
    Subtotal:
  • FREE SHIPPING OVER $249
    Seal With Bearing Retainer-Electric For Eaton-Fuller RTLO & FRO Transmission - Replaces K2918

    Seal With Bearing Retainer-Electric For Eaton-Fuller RTLO & FRO Transmission - Replaces K2918

    OPP - ORIGINAL PARTS PROGRAM

    $55.99
    Seal for Eaton Fuller RTLO and FRO Transmissions* High Quality Seal* With Bearing Retainer-Electric* Replaces OEM # K2918* Sold Individually* Warranty On Seal Against Defects In Workmanship &...
    09-0705012
    SKU:
    09-0705012
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $55.99
    Qty in Cart: 0
    Price:
    $55.99
    Subtotal:
  • FREE SHIPPING OVER $249
    Nut For Output Shaft Eaton-Fuller RTLO & FRO Transmission - Replaces K4122

    Nut For Output Shaft Eaton-Fuller RTLO & FRO Transmission - Replaces K4122

    OPP - ORIGINAL PARTS PROGRAM

    $41.04
    Nut Output Shaft* High Quality Nut Output Shaft* Output Shaft For Eaton-Fuller RTLO And From Transmissions* Replaces OEM # K4122* Sold Individually* Warranty On Nut Output Shaft Against Defects In...
    09-0705011
    SKU:
    09-0705011
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Availability:
    Ready To Ship
    $41.04
    Qty in Cart: 0
    Price:
    $41.04
    Subtotal:
  • FREE SHIPPING OVER $249
    Yoke Transmission Output 1810 1/2 Round - Replaces 6.5-4-4631-1

    Yoke Transmission Output 1810 1/2 Round - Replaces 6.5-4-4631-1

    OPP - ORIGINAL PARTS PROGRAM

    $217.99
    Yoke Transmission Output* High Quality Yoke Transmission Output* 1810 1/2 Round* Replaces OEM # 6.5-4-4631-1* Sold Individually* Warranty On Yoke Transmission Output Against Defects In Workmanship &...
    09-0705010
    SKU:
    09-0705010
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Availability:
    Ready To Ship
    $217.99
    Qty in Cart: 0
    Price:
    $217.99
    Subtotal:
  • FREE SHIPPING
    Yoke Transmission Output 1760 1/2 Round - Replaces 6.3-4-1681-1

    Yoke Transmission Output 1760 1/2 Round - Replaces 6.3-4-1681-1

    OPP - ORIGINAL PARTS PROGRAM

    $276.99
    Yoke Transmission Output* High Quality Yoke Transmission Output* 1760 1/2 Round* Replaces OEM # 6.3-4-1681-1* Sold Individually* Warranty On Yoke Transmission Output Against Defects In Workmanship &...
    09-0705009
    SKU:
    09-0705009
    Truck Class:
    Universal
    Material Options:
    Steel
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $276.99
    Qty in Cart: 0
    Price:
    $276.99
    Subtotal:
  • On Sale
    Limited Quantity Available
    Turbocharger W/ Wastegate Up To 800 HP - OE: 14969880002 KT14969880002 CAT800

    Turbocharger W/ Wastegate Up To 800 HP - OE: 14969880002 KT14969880002 CAT800

    AREA DIESEL SERVICE

    Now: $1,591.57
    Was: $2,633.99
    Turbocharger OD 4.32 Inch - 109.3 Mm* High Quality Turbocharger* With Wastegate Up To 800Hp* S410Sx Compressor Wheel * O.D. 4.32 Inch - 109.73 Mm * Compressor Wheel Inducer Diameter 3.16 Inch - 80.30...
    09-0704110
    SKU:
    09-0704110
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    Availability:
    Ready To Ship
    Now: $1,591.57
    Was: $2,633.99
    Qty in Cart: 0
    Price:
    Now: $1,591.57
    Was: $2,633.99
    Subtotal:
  • Turbo HE451VE W/ Actuator

    Turbo HE451VE W/ Actuator

    AREA DIESEL SERVICE

    $6,984.99
    Turbo W/ Out Core* High Quality Turbo* With Actuator * Core Not Included* Sold Individually* Warranty On Turbo Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    09-0704109
    SKU:
    09-0704109
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $6,984.99
    Qty in Cart: 0
    Price:
    $6,984.99
    Subtotal:
  • Turbocharger For Cummins ISX Engines - Replaces 4043620

    Turbocharger For Cummins ISX Engines - Replaces 4043620

    AREA DIESEL SERVICE

    $4,636.99
    Replacement 4043620 Turbocharger* High Quality Turbocharger* Aluminum Compressor Housing* Turbine Housing Included* V-Band Compressor Outlet Style* Sold Individually* Warranty On Turbocharger Against...
    09-0704044
    SKU:
    09-0704044
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Product Type:
    Engine Parts
    $4,636.99
    Qty in Cart: 0
    Price:
    $4,636.99
    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.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!