Starter Motor Description
This Starter Motor is indexed for Komatsu D20; Komatsu D21; Komatsu D31; Komatsu D40. Compare reference number 600-813-3861 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 600-813-3861, 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.




