Skip to Product Info
    • CAT 304 Top Roller | Part #277-8576
    • CAT 304 Top Roller | Part #277-8576 - close up
    • CAT 304 Top Roller | Part #277-8576 - left side
    • CAT 304 Top Roller | Part #277-8576 - internal guide lugs

    CAT 304 Top Roller | Part #277-8576

    Free Shipping Lower 48
    Regular Price $165.10Call for Price
    • In Stock
    • Out of Stock
    • Delivers Free to
    • Order within to receive by
    • We ship the lower 48 only.

    *Estimated LTL transit. Carrier schedules may vary per delivery type.

    Request quote
    Request Quote

    This option is not currently available for direct checkout.

    CAT 304 Top Roller | Part #277-8576This replacement top roller is cataloged for CAT 304 and is intended for service in the tracked undercarriage. The top roller supports the return...
    Payment & Security

    Your payment information is processed securely. We do not store or have access to your credit card details.

    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Visa

    PRODUCT SPECIFICATIONS

    Technical Dimensions

    Part # 277-8576
    Weight 15.0 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 top roller fits the Cat 304?
    This top roller is listed for the Cat 304 and matches OEM Part #277-8576. Before ordering, compare your machine make, model, serial number, and existing part number to confirm the correct undercarriage position and fitment.
    What sprocket fits the Cat 304?
    Matching drive sprocket options for the Cat 304 include CAT 304 Sprocket | Part #158-4795. When installing new rubber tracks, inspect sprockets for hooked, sharp, or uneven teeth because worn sprockets can shorten track life and damage the drive lugs.
    What bottom rollers fit the Cat 304?
    Matching bottom roller or track roller options for the Cat 304 include CAT 304 Track Roller | Part #340-8957. 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 304?
    Matching front idler options for the Cat 304 include CAT 304 Front Idler | Part #241-5973. 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 top rollers?
    Matching rubber track options connected to this Cat 304 undercarriage setup include CAT 304 Rubber Tracks | 400x72.5Wx72 (Part #400X72.5WX72). 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 304 part?
    Yes. Sprockets, idlers, rollers, and rubber tracks wear together as a system. Before replacing this part for the Cat 304, 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 304?
    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 304 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.