Hydraulic Oil Cooler Description
This Hydraulic Oil Cooler is indexed for Caterpillar Excavator CAT 340D Hydraulic Oil Cooler. Compare reference number pilotpart238979 against the label on your existing Caterpillar component before ordering.
Before checkout, compare OEM part number pilotpart238979, 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.




