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Heavy-Duty Main Hydraulic Pumps & High-Pressure Piston Pump Assemblies
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704-71-44011 Hydraulic Pump fits for Komatsu Bulldozers D475A-1
704-71-44011 Hydraulic Pump fits for Komatsu Bulldozers D475A-1 Part number: 704-71-44011 Package Included: New Hydraulic Pump*1 Application: fits for Komatsu Bulldozers D475A-1 Condition: New Aftermarket In Stock Key Features: Direct-fit replacement: No modification required for installation....Regular price $ 2,999 -
705-58-24010 Hydraulic Pump fits for Komatsu Graders PC60-2
705-58-24010 Hydraulic Pump fits for Komatsu Graders PC60-2 Part number:705-58-24010 Package Included: Hydraulic Pump Gear Pump*1 Application: fits for Komatsu Graders PC60-2 Condition: New Aftermarket In Stock Key Features: Direct-fit replacement: No modification required for installation....Regular price $ 1,500 -
705-52-30080 Hydraulic Pump fits for Komatsu Wheel Loaders WA350-1 WA350-0C
705-52-30080 Hydraulic Pump fits for Komatsu Wheel Loaders WA350-1 WA350-0C Part number:705-52-30080 Package Included: HYDRAULIC PUMP*1 Application: for Komatsu Wheel Loaders WA350-1 WA350-0C Condition: New Aftermarket In Stock Key Features: Direct-fit replacement: No modification required for...Regular price $ 1,028 -
705-52-40000 Hydraulic Pump fits for Komatsu Bulldozers D375A-1 D375A-2
705-52-40000 Hydraulic Pump fits for Komatsu Bulldozers D375A-1 D375A-2 Part number: 705-52-40000 Package Included: Hydraulic Pump *1 Application:fits for Komatsu Bulldozers D375A-1 D375A-2 Condition: New Aftermarket In Stock Key Features: Direct-fit replacement: No modification required for...Regular price $ 2,500 -
705-55-24130 7055524130 Hydraulic Pump fits for Komatsu Loader WA320-3 WA300-3CS WA300L-3
This new aftermarket hydraulic pump assembly is designed as a direct replacement for Komatsu Wheel Loaders WA320-3 WA300-3CS WA300L-3 series wheel loaders. Built to specifications, it delivers stable hydraulic performance and reliable operation in demanding jobsite...Regular price $ 1,300 -
705-55-33100 Hydraulic Pump fits for Komatsu Wheel Loaders WA430-5 WA430-5-SN
This new aftermarket hydraulic pump assembly is designed as a direct replacement for Komatsu Wheel Loader WA430-5 WA430-5-SN series wheel loaders. Built to specifications, it delivers stable hydraulic performance and reliable operation in demanding jobsite conditions....Regular price $ 1,908
If your excavator is struggling to lift loads or performing sluggishly on the job site, a worn replacement main hydraulic pump is likely the issue. As the primary power source for your machine's movements, a high-efficiency piston pump converts engine power into the high-pressure flow required for heavy digging and lifting. BeeSpareParts offers a wide range of K3V, K5V, and HPV series pumps specifically engineered for the high-intensity demands of construction and mining.
A failing main pump can often be a symptom of deeper system issues. To protect your investment, we highly recommend browsing our to eliminate contaminants that cause premature wear, or checking our for any internal leaks. If only small auxiliary functions are failing, consider inspecting your first. Our main pump assemblies are a cost-effective alternative to OEM units, featuring precision-ground internal components and rugged housings to restore your machine’s factory-spec performance.
Whether you need a Kawasaki-style pump for a Komatsu, a main pump for a Doosan, or a heavy-duty unit for a Hitachi excavator, our parts are rigorously factory-tested for pressure stability and ready for fast international shipping. Eliminate downtime and regain your digging power—upgrade to a premium hydraulic pump solution today.
Fits for:
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Engine & Model Series: 6BT, 6CT, 6D102, 6D107, S6K, J05E, J08E, 4HK1, 6HK1.
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Equipment Models: ZX, PC, SK, EC, EX series excavators, crawler cranes, and heavy-duty loaders.