1559136 Barrel Fits Caterpillar Models
1559136 Barrel Fits Caterpillar Models
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One New Aftermarket Replacement Hydraulic Pump Piston Barrel for Caterpillar (Cat) Equipment
This aftermarket replacement hydraulic pump piston barrel replaces Caterpillar (Cat) OEM part number 1559136. The barrel is a core rotating-group component inside the hydraulic piston pump, housing the pistons and porting pressurized fluid through the pump assembly. Worn or damaged barrels are a common cause of hydraulic pump performance loss and are a key rebuild part.
Compatible Models
Caterpillar Excavators: 345B, 345B II, 345B L, 345C, 345C L, 385B, 385C, 385C FS
Caterpillar Engines: 3126B, 3176C, 3196, 3412E, 3456, 3456B, 3456E, 3524B, C-12, C-13
Note: This part may fit additional Caterpillar models. Confirm compatibility using your machine model and serial number before ordering.
Replaces Part Number(s):
1559136, 155-9136
New aftermarket replacement part - not remanufactured, not used.



