Thermostat Description
This Thermostat is indexed for Komatsu PC300-3; Komatsu PC400; Komatsu PC400-3; Komatsu PC400-5. Compare reference number 600-421-6310 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 600-421-6310, 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.




