Semi-Truck Frame Chassis Parts

Semi-Truck Frame Chassis Parts

Semi-Truck Frame Chassis Parts

Need semi-truck frame chassis parts? Choose from high-strength frame rails, crossmembers, and reliable fifth wheel replacement parts to keep your rig solid. Enjoy a smooth ride with quality springs and shock absorbers. Ensure stable control with our durable control arms and steering linkages. Looking for axles or frame steps? We've got those too. Shop at 4 State Trucks!
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  • Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute
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    Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute

    LOAD-SHARE SUSPENSIONS

    $573.99
    Single Side Air Bag Replacement Kit for 4 Inch Round Top U Bolt & Double Convolute * High Quality Air Bag Replacement Kit* Single Side * Replacement Kit For 4 Inch Round Top U Bolt* Sold Individually* Warranty On Air Bag Replacement Kit Against Defects...
    $573.99
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    $573.99
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  • On Sale
    Seal Input Shaft For Rockwell RD20145 - Replaces A1205R2592 & 100494 Seal Input Shaft For Rockwell RD20145 - Replaces A1205R2592 & 100494
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    Seal Input Shaft For Rockwell RD20145 - Replaces A1205R2592 & 100494

    OPP - ORIGINAL PARTS PROGRAM

    Now: $10.90
    Was: $41.94
    Seal Input Shaft * High Quality Seal Tail Shaft* For Rockwell RD20145* Replaces OEM # A1205R2592, 100494* Sold Individually* Warranty On Seal Input Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    Now: $10.90
    Was: $41.94
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    Now: $10.90
    Was: $41.94
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  • Seal Tail Shaft For Rockwell RD20145 - Replaces A1205P2590 Seal Tail Shaft For Rockwell RD20145 - Replaces A1205P2590
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    Seal Tail Shaft For Rockwell RD20145 - Replaces A1205P2590

    OPP - ORIGINAL PARTS PROGRAM

    $41.95
    Seal Tail Shaft * High Quality Seal Tail Shaft* For Rockwell RD20145* Replaces OEM # A1205P2590, 100495* Sold Individually* Warranty On Seal Tail Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket...
    $41.95
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    $41.95
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  • Seal Pinion For Rockwell RR20145 - Replaces A1205N2588 Seal Pinion For Rockwell RR20145 - Replaces A1205N2588
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    Seal Pinion For Rockwell RR20145 - Replaces A1205N2588

    OPP - ORIGINAL PARTS PROGRAM

    $52.37
    Seal Pinion * High Quality Seal Pinion* For Rockwell RR20145* Replaces OEM # A1205N2588, 100263* Sold Individually* Warranty On Seal Pinion Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...
    $52.37
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    $52.37
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  • Nut For Pinion & Tail Shaft Rockwell RD-RR2014 - Replaces KIT2637 Nut For Pinion & Tail Shaft Rockwell RD-RR2014 - Replaces KIT2637
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    Nut For Pinion & Tail Shaft Rockwell RD-RR2014 - Replaces KIT2637

    OPP - ORIGINAL PARTS PROGRAM

    $20.89
    Nut Pinion And Tail Shaft * High Quality Nut Pinion And Tail Shaft* For Rockwell RD-RR2014* Replaces OEM # KIT2637* Sold Individually* Warranty On Nut Pinion And Tail Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...
    $20.89
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    $20.89
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  • On Sale
    Nut For Input Shaft Rockwell RD20145 - Replaces KIT2638 Nut For Input Shaft Rockwell RD20145 - Replaces KIT2638
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    Nut For Input Shaft Rockwell RD20145 - Replaces KIT2638

    OPP - ORIGINAL PARTS PROGRAM

    Now: $9.00
    Was: $27.27
    Nut Input Shaft * High Quality Nut Input Shaft* For Rockwell RD20145* Replaces OEM # KIT2638* Sold Individually* Warranty On Nut Input Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...
    Now: $9.00
    Was: $27.27
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    Now: $9.00
    Was: $27.27
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  • Locking Nut For Input Shaft DSP40-404 Locking Nut For Input Shaft DSP40-404
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    Locking Nut For Input Shaft DSP40-404

    OPP - ORIGINAL PARTS PROGRAM

    $20.41
    Locknut Input Shaft * High Quality Nut Flanged Lock Output Shaft* Rear Input Shaft For Eaton DSP40-404* Replaces OEM # 128049* Sold Individually* Warranty On Locknut Input Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High...
    $20.41
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    $20.41
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  • Flanged Locking Nut For Pinion RSP40-404 Flanged Locking Nut For Pinion RSP40-404
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    Flanged Locking Nut For Pinion RSP40-404

    OPP - ORIGINAL PARTS PROGRAM

    $17.98
    Nut Flanged Lock Pinion * High Quality Nut Flanged Lock Output Shaft* Rear Output Shaft For Eaton RSP40-404* Replaces OEM # 127589* Sold Individually* Warranty On Nut Flanged Lock Pinion Against Defects In Workmanship & Material From Date Of Purchase***...
    $17.98
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    $17.98
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  • Flanged Locking Nut For Rear Output Shaft Flanged Locking Nut For Rear Output Shaft
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    Flanged Locking Nut For Rear Output Shaft

    OPP - ORIGINAL PARTS PROGRAM

    $18.77
    Nut Flanged Lock Rear Output * High Quality Nut Flanged Lock Output Shaft* Rear Output Shaft For Eaton DSP40-404* Replaces OEM # 127588* Sold Individually* Warranty On Nut Flanged Lock Output Shaft Against Defects In Workmanship & Material From Date Of...
    $18.77
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    $18.77
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  • Oil Seal Rear Output Shaft Oil Seal Rear Output Shaft
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    Oil Seal Rear Output Shaft

    OPP - ORIGINAL PARTS PROGRAM

    $104.99
    Oil Seal Rear Output Shaft * High Quality Oil Seal Rear Output Shaft* Replaces OEM # 127592* Sold Individually* Warranty On Output Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not...
    $104.99
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    $104.99
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  • Oil Seal Differential Input Shaft For Eaton DSP & RSP40-404 - Replaces 127591 Oil Seal Differential Input Shaft For Eaton DSP & RSP40-404 - Replaces 127591
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    Oil Seal Differential Input Shaft For Eaton DSP & RSP40-404 - Replaces 127591

    OPP - ORIGINAL PARTS PROGRAM

    $46.89
    Oil Seal Differential Input Shaft * High Quality Oil Seal Differential Input Shaft* Replaces OEM # 127591* Sold Individually* Warranty On Input Shaft Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement...
    $46.89
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    $46.89
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  • Jost 5th Wheel Top Plate Replaces Holland 5th Wheel Plate FW8, FW2000,FW3501,FW17,FW2500,FW35,FW253
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    Jost 5th Wheel Top Plate Replaces Holland 5th Wheel Plate FW8, FW2000,FW3501,FW17,FW2500,FW35,FW253

    JOST

    $1,329.99
    5th Wheel Top Plate Fits Holland * High Quality 5th Wheel Top Plate* Sold Individually* Warranty On 5th Wheel Top Plates Against Defects In Workmanship & Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)***** Replaces...
    $1,329.99
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    $1,329.99
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