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    • CAT 303-5 Top Roller
    • CAT 303-5 Top Roller | Part #146-6064 - close up
    • CAT 303-5 Top Roller | Part #146-6064 - left side
    • CAT 303-5 Top Roller | Part #146-6064 - internal guide lugs

    CAT 303-5 Top Roller | Part #146-6064

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    Sale Price $106.25Regular Price $110.50
    • In Stock: 8 Available
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    CAT 303-5 Top Roller | Part #146-6064This heavy-duty aftermarket top roller, part #146-6064, is cataloged for the CAT 303-5 mini excavator. The top roller supports the return side of the...
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    PRODUCT SPECIFICATIONS

    Technical Dimensions

    Part # 146-6064
    Weight 8.58 lbs

    Construction & Features

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

    Fitment Table

    CAT303.5

    Frequently Asked Questions

    Fitment, availability, fulfillment, and support for this product

    What top roller fits the Cat 303-5?
    This top roller is listed for the Cat 303-5 and matches OEM Part #146-6064. 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 303-5?
    Matching bottom roller or track roller options for the Cat 303-5 include CAT 303.5 Track Roller | Part #185-7280. 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 303-5?
    Matching front idler options for the Cat 303-5 include CAT 303.5 Front Idler | Part #172-2100. Front idlers guide the track and help maintain proper tension, so inspect the flange, bearing condition, and wear surface before installing new tracks.
    Should I inspect the full undercarriage before replacing this Cat 303-5 part?
    Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Cat 303-5, 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 303-5?
    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 Cat 303-5 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.
    What machines is this top roller listed for?
    Current compatible equipment listed in the TrackTECH catalog includes CAT 303.5.
    Where can I buy this top roller?
    TrackTECH supplies new replacement top roller options with low direct pricing, free shipping and fast nationwide delivery. Current price and availability are shown on the product page.