Hydraulic Oil Cooler Description
This Hydraulic Oil Cooler is indexed for Caterpillar Caterpillar Excavator CAT 311B 312B Engine 3064. Compare reference number 118-9949 against the label on your existing Caterpillar component before ordering.
Before checkout, compare OEM part number 118-9949, 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.




