CATERPILLAR 209-3258 HYDRAULIC PUMP

The Caterpillar 209-3258 Hydraulic Pump is a genuine OEM piston pump built as the main hydraulic power source for the Cat 980G Series II wheel loader, powered by the 3406 or 3406E engine. As the core of the machine’s hydraulic system, this pump converts engine power into high-pressure hydraulic flow, driving the loader’s bucket lift, tilt, and steering functions simultaneously and keeping response smooth and consistent during loading and maneuvering.

This pump is built on the Rexroth A10VO45 DFR1/52L-VUC11N00 platform (Rexroth MNR: R902427253), a variable displacement axial piston pump with DFR pressure and flow control. Caterpillar sources this unit through Rexroth’s OEM manufacturing relationship, meaning the 209-3258 shares its rotating group, swashplate design, and DFR control valve architecture with the equivalent Rexroth part — closely machined internal tolerances between the pistons, cylinder block, and valve group allow it to maintain volumetric efficiency even under the constant load cycling typical of wheel loader operation. Its robust construction is engineered to resist wear from repeated pressure fluctuations and high-duty-cycle use, helping the pump hold consistent output over extended service life rather than losing efficiency prematurely.

Fitting the genuine Caterpillar pump instead of a mismatched substitute matters because internal clearances, port configuration, and mounting dimensions all need to match exactly what the 980G II’s hydraulic circuit was engineered around — even small deviations here can lead to reduced flow, overheating, or premature wear on the rotating group. Replacing a worn pump with the correct OEM unit restores full hydraulic performance and protects downstream components like valves and lift cylinders from the effects of inconsistent pressure.

Technical Features

• Genuine Caterpillar-spec hydraulic piston pump
• Designed as the main pump for the Cat 980G Series II wheel loader
• Built on the Rexroth A10VO45 DFR1/52L-VUC11N00 variable displacement axial piston platform
• Rexroth MNR: R902427253
• Precision-machined rotating group with DFR pressure/flow control for consistent volumetric efficiency
• Weight: approx. 43.8 lbs (19.87 kg)
• Approx. dimensions: 12.80 x 11.02 x 10.43 inches
• No core return required
• Built for continuous-duty pressure and load cycling in loader applications

Compatible Machine Model

• Caterpillar 980G Series II Wheel Loader (powered by 3406 / 3406E engine)

Cross Reference / OEM Equivalent

• Rexroth A10VO45 DFR1/52L-VUC11N00 (MNR: R902427253)

Alternative Part Numbers

• Atlas Copco 326-9120-007 Hydraulic Pump
• Case D53690 Hydraulic Pump
• Eaton 003920-031 Hydraulic Pump

Shop & Supply stocks the Caterpillar 209-3258 Hydraulic Pump for immediate dispatch, as part of a broad lineup of genuine Cat hydraulic pumps for wheel loaders and other heavy equipment. Choosing the original part means the exact internal tolerances and mounting specifications your 980G II was built around — reliable hydraulic performance without the guesswork of an unverified substitute.