Western Star Trucks

Western Star Trucks

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

    OPP - ORIGINAL PARTS PROGRAM

    $36.89
    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 Workmanship & Material From Date Of Purchase*** High...
    $36.89
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  • 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
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    Yoke Transmission Output 1810 1/2 Round - Replaces 6.5-4-4631-1

    OPP - ORIGINAL PARTS PROGRAM

    $189.99
    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 & Material From Date Of Purchase*** High Quality...
    $189.99
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  • 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
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    Yoke Transmission Output 1760 1/2 Round - Replaces 6.3-4-1681-1

    OPP - ORIGINAL PARTS PROGRAM

    $253.99
    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 & Material From Date Of Purchase*** High Quality...
    $253.99
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  • Radiator Cap For Large Opening - 10 Lb Pressure Rating Radiator Cap For Large Opening - 10 Lb Pressure Rating
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    Radiator Cap For Large Opening - 10 Lb Pressure Rating

    PARTS DISTRIBUTING

    $19.98
    Radiator Cap * High Quality Radiator Cap* Large Style* 10 Pounds* Sold Individually* Warranty On Radiator Cap Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***This Original Parts...
    $19.98
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  • On Sale
    Radiator Cap For Small Opening - 10 Lb Pressure Rating Radiator Cap For Small Opening - 10 Lb Pressure Rating
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    Radiator Cap For Small Opening - 10 Lb Pressure Rating

    OPP - ORIGINAL PARTS PROGRAM

    Now: $3.59
    Was: $12.39
    Radiator Cap * High Quality Radiator Cap* Small Style* 10 Pounds* Sold Individually* Warranty On Radiator Cap Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***This Original Parts...
    Now: $3.59
    Was: $12.39
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    Now: $3.59
    Was: $12.39
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  • EGR Valve Replaces 4955421 For Cummins ISM 10.8L
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    EGR Valve Replaces 4955421 For Cummins ISM 10.8L

    BESTFIT TRUCK PARTS

    $773.99
    EGR Valve Fits Cummins ISM 10.8 Liter 2003-2007The EGR valve is a direct replacement for part number 4955421, designed for the Cummins ISM 10.8L engine. It effectively re-circulates exhaust gas for re-burning in the intake manifold. This valve withstands...
    $773.99
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  • Heavy Duty EGR Cooler Gasket Kit Replaces 4309380NX For Cummins ISM 10.8L
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    Heavy Duty EGR Cooler Gasket Kit Replaces 4309380NX For Cummins ISM 10.8L

    DAYTON / DORMAN

    $103.99
    EGR Cooler Head Gasket Kit For Cummins ISM 10.8L 2002-2006 This EGR Cooler Gasket Kit Contains All The Gaskets And O-Rings You Need For A Complete Repair Of The EGR Cooler. The Kit May Also Be Used For A Variety Of Other Automotive Repairs, Including...
    $103.99
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  • EGR Cooler Heavy Duty Gasket Kit Replaces 4309434NX For Cummins ISX 15L
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    EGR Cooler Heavy Duty Gasket Kit Replaces 4309434NX For Cummins ISX 15L

    DAYTON / DORMAN

    $114.99
    EGR Cooler Head Gasket Kit Fits Cummins ISX 15L 2003-2007 This EGR Cooler Gasket Kit Contains All The Gaskets And O-Rings You Need For A Complete Repair Of The EGR Cooler. The Kit May Also Be Used For A Variety Of Other Automotive Repairs, Including...
    $114.99
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  • Clutch Brake Spicer Style 1 Piece
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    Clutch Brake Spicer Style 1 Piece

    AFTERMARKET

    $47.93
    Clutch Brake Spicer Style 1 Piece * High Quality Clutch Brake * 1 Piece Torque Limiting* Sold Individually* Warranty On Clutch Brake Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...
    $47.93
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  • Turbocharger For Cummins ISX Engines - Replaces 4043620
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    Turbocharger For Cummins ISX Engines - Replaces 4043620

    AFTERMARKET

    $4,500.99
    Replacement 4043620 Turbocharger * High Quality Turbocharger* Replaces OE Number 4043620* Sold Individually* Warranty On Turbocharger Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)...
    $4,500.99
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    $4,500.99
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  • Turbocharger For N14 Cummins Borg Warner 14.0L BHT3E
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    Turbocharger For N14 Cummins Borg Warner 14.0L BHT3E

    AFTERMARKET

    $1,630.99
    Borg Warner 14L BHT3E Turbocharger For Cummins N14 * High Quality Turbocharger* Replaces OE Number 3531733, 3536095, 3536263, 3537074, 3803585, 3804308, 3804502, 3531267, 3592678, 3592512* Sold Individually* Warranty On Turbocharger Against Defects In...
    $1,630.99
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    $1,630.99
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  • Borg Warner Turbocharger For Detroit 12.7 60 Series Engine
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    Borg Warner Turbocharger For Detroit 12.7 60 Series Engine

    AFTERMARKET

    $1,047.99
    Turbocharger Fits 12.7L 60 Series Detroit Engine * High Quality Turbocharger* Replaces OE Number 23518588, 23518597, 466713-5, 466713-6* Sold Individually* Warranty On Turbocharger Against Defects In Workmanship & Material From Date Of Purchase*** High...
    $1,047.99
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    $1,047.99
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