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    • John Deere 50D Sprocket | Part #2054978
    • John Deere 50D Sprocket | Part #2054978 - close up
    • John Deere 50D Sprocket | Part #2054978 - left side
    • John Deere 50D Sprocket | Part #2054978 - internal guide lugs

    John Deere 50D Sprocket | Part #2054978

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    John Deere 50D Sprocket | Part #2054978This replacement drive sprocket is cataloged for John Deere 50D and is intended for service in the tracked undercarriage. The drive sprocket transfers drive...
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    PRODUCT SPECIFICATIONS

    Technical Dimensions

    Part # 2054978
    Tooth Count 19
    Bolt Hole Count 18
    Weight 28.82 lbs

    Construction & Features

    DurabilityHeavy duty only
    FitmentOEM-reference match
    ConstructionDrop forged steel
    FinishHeat-treated hardening

    Frequently Asked Questions

    Fitment, availability, fulfillment, and support for this product

    What drive sprocket fits the John Deere 50D?
    This drive sprocket is listed for the John Deere 50D and matches OEM Part #2054978. Before ordering, compare your machine make, model, serial number, and existing part number to confirm the correct undercarriage position and fitment.
    What bottom rollers fit the John Deere 50D?
    Matching bottom roller or track roller options for the John Deere 50D include John Deere 50D Track Roller | Part #9239528. Replacing worn rollers before installing new rubber tracks helps keep the undercarriage aligned and reduces uneven wear across the track carcass.
    What front idler fits the John Deere 50D?
    Matching front idler options for the John Deere 50D include John Deere 50D Front Idler | Part #9237507. Front idlers guide the track and help maintain proper tension, so inspect the flange, bearing condition, and wear surface before installing new tracks.
    What top roller fits the John Deere 50D?
    Matching top roller options for the John Deere 50D include John Deere 50D Carrier Roller | Part #4718355. Top rollers support the upper track path and should be checked for bearing play, flat spots, and uneven wear during undercarriage service.
    What rubber tracks pair with this drive sprockets?
    Matching rubber track options connected to this John Deere 50D undercarriage setup include John Deere 50D Rubber Tracks | 400x72.5Wx74 (Part #400X72.5WX74). If you are replacing this part, inspect the full undercarriage so the new component and rubber tracks wear evenly together.
    Should I inspect the full undercarriage before replacing this John Deere 50D part?
    Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the John Deere 50D, inspect the full undercarriage for uneven wear, bearing play, hooked sprocket teeth, and track tension issues.
    How do I confirm this product fits the John Deere 50D?
    Confirm fitment by checking your machine make, model, serial number, and existing track size or OEM part number. For rubber tracks, verify width, pitch, and link count. For undercarriage parts, compare the part number, bolt pattern, tooth count, and machine position. You can also use the TrackTECH Track Finder or call (850) 816-7898 before ordering.
    How fast does TrackTECH ship John Deere 50D parts?
    TrackTECH ships rubber tracks and undercarriage parts quickly across the Lower 48. Heavy items typically ship by freight, while smaller undercarriage parts may ship by parcel depending on warehouse availability. Review TrackTECH shipping information or contact us before ordering if you need priority freight options.