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Heavy-Duty Main Hydraulic Pumps & High-Pressure Piston Pump Assemblies
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704-71-44030 Hydraulic Pump fits for Komatsu Bulldozers D275A-2
704-71-44030 Hydraulic Pump fits for Komatsu Bulldozers D275A-2 Part Number: 704-71-44030 Application: fits for Komatsu Bulldozers D275A-2 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for installation. Stable operation:...Regular price $ 3,999 -
705-52-30A00 Hydraulic Pump For Komatsu D155AX-6 D155A-6R D155AX-7 D155A-6
705-52-30A00 Hydraulic Pump For Komatsu D155AX-6 D155A-6R D155AX-7 D155A-6 Part Number: 705-52-30A00 Application: For Komatsu D155AX-6 D155A-6R D155AX-7 D155A-6 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for installation....Regular price $ 1,100 -
Hydraulic Pump 705-22-38050 7052238050 Compatible with Komatsu Dump Trucks HD325-6 HD405-6
Hydraulic Pump 705-22-38050 7052238050 Compatible with Komatsu Dump Trucks HD325-6 HD405-6 Part Number: 705-22-38050 7052238050 Application: Compatible with Komatsu Dump Trucks HD325-6 HD405-6 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No...Regular price $ 649 -
For Komatsu Bulldozer D85MS-15 D85EX-15 D85PX-15E0 Hydraulic Pump 705-51-30660
For Komatsu Bulldozer D85MS-15 D85EX-15 D85PX-15E0 Hydraulic Pump 705-51-30660 Part Number: 705-51-30660 Application: For Komatsu Bulldozer D85MS-15 D85EX-15 D85PX-15E0 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for installation....Regular price $ 1,298 -
Hydraulic Pump 705-21-32050 for Komatsu Engine S6D125E-2 Bulldozer D85A-21 D85P-21 D85C-21
Hydraulic Pump 705-21-32050 for Komatsu Engine S6D125E-2 Bulldozer D85A-21 D85P-21 D85C-21 Part Number: 705-21-32051 7052132051 Application: for Komatsu Engine S6D125E-2 Bulldozer D85A-21 D85P-21 D85C-21 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement:...Regular price $ 628 -
New Hydraulic Pump 705-12-44010 7051244010 Compatible with Komatsu Bulldozers D155AX-5
New Hydraulic Pump 705-12-44010 7051244010 Compatible with Komatsu Bulldozers D155AX-5 Part Number: 705-12-44010 7051244010 Application: Compatible with Komatsu Bulldozers D155AX-5 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for...Regular price $ 1,098
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.