Fuel Water Separator Description
This Fuel Water Separator is indexed for Komatsu D31Q-20; Komatsu D31S-20; Komatsu D68ESS-12; Komatsu D31A-20. Compare reference number 600-311-9731 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 600-311-9731, 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.




