Track Roller Description
This Track Roller is indexed for Komatsu Fit For Komatsu Dozer: D51PX-24, D51PXI-24, D51EX-22, D51PX-22. Compare reference number 12Y-30-00021 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 12Y-30-00021, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.




