Alternator Description
This Alternator is indexed for Komatsu · 4D95L; Komatsu · 6D95L; Komatsu · 4D95S-W-1D; Komatsu · 4D95S-W-1J. Compare reference number 600-821-3850 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 600-821-3850, 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.




