Pump 1003259 Fits Caterpillar 416B 426B 436B 438B

One New Aftermarket Replacement Hydraulic Piston Pump Fits Caterpillar (Fits CAT) Backhoe Loaders

This hydraulic piston pump (Pump Group-Piston) is a direct-fit aftermarket replacement Fits Caterpillar (Fits CAT) B-Series backhoe loaders equipped with the 3054 diesel engine. It supplies pressurized hydraulic fluid to the loader’s hydraulic system, powering the boom, bucket, and related functions. The pump is a Rexroth-design axial piston unit and is interchangeable with both the original Fits Caterpillar part number and the Rexroth/Fits Bosch OEM number.

Compatible Models

Fits Caterpillar (Fits CAT) B-Series Backhoe Loaders (3054 Engine): 416B, 426B, 428B, 436B, 438B

Replaces Part Number(s):

1003259, 100-3259, M1003259, CA1003259, 0R-9645, 0R9645, CA0R9645, HYI60-0103

Aftermarket Interchange Numbers

Rexroth/Fits Bosch: R986110062, R986120165

New aftermarket replacement part – not remanufactured, not used.