Sprockets for Tracked Equipment
CAT 279 Sprockets
Replacement sprockets for CAT 279 tracked equipments. Drive the track and transfer power from the final drive. Wholesale pricing with fast shipping from our Houston warehouse.
Verified Part Numbers for CAT 279
The following part numbers have been verified through extensive compatibility research, fitment validation, and real-world application history for CAT 279 tracked equipments.
Verified Fitment - Compatibility Confirmed
Based on compatibility research, fitment validation, and real-world application history
Primary Part Number
304-1916
Common Fitment
Cat 279C, 279C2, 279D, 279D3, 289C (specific to JMP serial break), 289C2, 289D, 289D3, 299C, 299D, 299DR, 299D3, 299D3 XE
Mount Type / Notes
Drive sprocket for the CAT 279C/279D/289C family (specific to certain serial prefixes - JM etc.). Verify tooth count and bolt pattern.
Serial Number Specific
Specific to certain serial-number prefixes - verify the serial plate before ordering.
Call 346-438-6252 to verify fitment by serial number before ordering
About Drive Sprockets for CAT 279
The drive sprocket is mounted directly to the final drive output and meshes with the track drive lugs. As the sprocket rotates, its teeth engage and push against the track lugs, propelling the machine forward or backward.
Sprocket teeth are precision-machined to match the track lug pitch and profile. Over time, teeth wear and can become hooked, sharp, or misshapen, causing inefficient power transfer and accelerated track lug wear.
Aftermarket sprockets are manufactured to OEM specifications using hardened steel alloys. Proper heat treatment ensures the tooth surface resists wear while the core remains tough enough to handle impact loads.
How Drive Sprockets Work
The sprocket receives rotational power from the final drive motor. As it turns, each tooth engages with a track drive lug, pushing the track around the undercarriage. The sprocket effectively acts as a gear, transferring all drive force to the track. Proper tooth-to-lug engagement is critical for efficient power transfer and track longevity.
Signs You May Need a Replacement Sprocket
Worn sprockets directly impact track life and machine performance. Early detection prevents costly track damage:
•Hooked or Sharp Sprocket Teeth
Normal wear causes teeth to develop a hook shape on the drive side. Severely hooked teeth grab and release the track lugs abruptly, causing skipping and premature lug wear.
•Track Slipping or Skipping Under Load
When sprocket teeth can no longer properly engage track lugs, the track may slip or skip, especially when pushing, climbing grades, or carrying heavy loads.
•Accelerated Track Lug Wear
Worn sprockets cause uneven contact with track lugs, concentrating wear on specific points. If track lugs are wearing faster than expected, inspect the sprocket.
•Visible Tooth Damage or Cracks
Chipped, cracked, or broken teeth cause track damage and uneven wear. Even one damaged tooth affects the entire track engagement pattern.
•Excessive Vibration During Travel
Worn sprockets create an irregular engagement pattern that causes vibration, noise, and jerky movement, especially at higher travel speeds.
•Track Derailment Issues
Severely worn sprockets may fail to maintain proper track engagement, contributing to track derailment during operation.
Fitment Verification
Sprocket specifications vary by machine model, serial number, and in some cases by track type. Tooth count, bolt pattern, and hub dimensions must match your machine exactly.
Some machines have serial number breaks where sprocket design changed during production. Providing your serial number ensures we match the correct part.
Our team can verify sprocket specifications including tooth count, bolt circle, and mounting dimensions before shipment.
Free Fitment Verification
Not sure which sprocket fits your CAT 279? Contact us with your serial number and we will verify the correct part at no charge.
Related CAT 279 Parts
Complete your undercarriage maintenance with these related components for your CAT 279.
Get a Quote for CAT 279 Sprockets
Contact us with your machine details for competitive wholesale pricing. Include your serial number for accurate fitment verification.
Get wholesale pricing on rubber tracks and undercarriage parts. We respond within 2 business hours.
Frequently Asked Questions About CAT 279 Sprockets
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