Main & Relief Valve Description
This Main & Relief Valve is indexed for Komatsu Excavator PC100 PC200 PC300 PC400 Main Relief Valve. Compare reference number pilotpart323084 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number pilotpart323084, 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.




