Caterpillar Track Sprocket 640-3842 is a sprocket product that transfers final-drive torque into the track chain. It is listed for Caterpillar heavy-equipment applications; use part number 640-3842 as the primary identification reference.
- Part Number: 640-3842
- Brand: Caterpillar
- Product Category: Sprocket
- Equipment Type: Rotary Drill, Log Loadr Forst Mach, Excavator
- Compatible Models: MD6250, MD6310, 558, 548, 568 FM
- Engine Models: Confirm by equipment serial number
- Condition: New
Fitment can vary by machine configuration and serial-number range. Compare the original part number, dimensions, connectors and mounting points before purchase.





