Caterpillar SB140 Hydraulic Main Pump

Caterpillar pump part 272‑6959, also known as the SBS140 hydraulic pump, serves as the core power component for CAT D‑series excavators fitted with C7 engine. This complete CAT325DL hydraulic pump assembly is a direct‑replacement SB140 variable displacement piston main pump for heavy‑duty excavator hydraulic systems.

Fits Caterpillar 325DL, 325D, 324D, 329D, 329DL with C7 engine.

Engineered as a drop‑in aftermarket replacement for OEM 272‑6959, this SBS140 hydraulic main pump matches original mounting footprint, no modification or re‑drilling required for on‑machine installation.

Built with high‑precision variable piston structure, the 272‑6959 main pump delivers consistent pressure output and smooth combined movements, delivering powerful digging force. It effectively resolves common excavator hydraulic failures including weak power, slow operation, poor pressure retention, internal leakage and abnormal noise.

Heavy‑duty high‑strength housing casting, paired with precision‑machined internal parts: pistons, valve plate and swing group. Built to withstand site dust, high temperature and heavy‑load working scenarios, ideal for earth‑moving and rock‑handling construction projects.

• 100% matched original mounting dimensions, flange connections and port positions, fully interchangeable with OEM part 272‑6959
• Full‑unit factory pressure & flow testing to eliminate oil leakage and pressure loss risks
• Complete assembly supplied with regulator included, ready for direct installation after delivery
• Perfect fit for CAT325DL, 325D, 324D, 329D, 329DL excavators equipped with C7 engine
   

  

   

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