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    • CAT 249D Sprocket | Part #304-1870
    • CAT 249D Sprocket | Part #304-1870 - close up
    • CAT 249D Sprocket | Part #304-1870 - left side
    • CAT 249D Sprocket | Part #304-1870 - internal guide lugs

    CAT 249D Sprocket | Part #304-1870

    Free Shipping Lower 48
    Sale Price $280.00Regular Price $322.00
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    CAT 249D Sprocket | Part #304-1870This replacement drive sprocket is cataloged for CAT 249D and is intended for service in the tracked undercarriage. The drive sprocket transfers drive torque into...
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    PRODUCT SPECIFICATIONS

    Technical Dimensions

    Part # 304-1870
    Tooth Count 15
    Bolt Hole Count 12
    Weight 36.52 lbs

    Construction & Features

    DurabilityHeavy duty only
    FitmentDirect OEM match
    ConstructionDrop forged steel
    ConstructionHeat-treated hardening

    Frequently Asked Questions

    Fitment, availability, fulfillment, and support for this product

    What drive sprocket fits the Cat 249D?

    This drive sprocket is listed for the Cat 249D and matches OEM Part #304-1870. 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 Cat 249D?

    Matching bottom roller or track roller options for the Cat 249D include <a href="/products/cat-249d-track-roller">CAT 249D Track Roller | Part #420-9801</a>. 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 Cat 249D?

    Matching front idler options for the Cat 249D include <a href="/products/cat-249d-front-idler">CAT 249D Front Idler | Part #420-9803</a>. Front idlers guide the track and help maintain proper tension, so inspect the flange, bearing condition, and wear surface before installing new tracks.

    What rubber tracks pair with this drive sprockets?

    Matching rubber track options connected to this Cat 249D undercarriage setup include <a href="/products/cat-249d-rubber-tracks">CAT 249D Rubber Tracks (Part #320X86BX49)</a>. 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 Cat 249D part?

    Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Cat 249D, inspect the full undercarriage for uneven wear, bearing play, hooked sprocket teeth, and track tension issues.

    How do I confirm this product fits the Cat 249D?

    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 <a href="/pages/rubber-track-finder">TrackTECH Track Finder</a> or call <a href="tel:8508167898">(850) 816-7898</a> before ordering.

    How fast does TrackTECH ship Cat 249D 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 <a href="/pages/shipping">TrackTECH shipping information</a> or contact us before ordering if you need priority freight options.

    What machines is this sprocket listed for?

    Current compatible equipment listed in the TrackTECH catalog includes CAT 249D.