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Hydraulic Pumps for Excavators: Main, Gear, Pilot & Piston Pumps

A hydraulic pump is the heart of your excavator; it is the component responsible for converting mechanical engine power into the hydraulic flow that drives every single function on your machine. As a critical component within the broader hydraulic parts system, the hydraulic pump operates under extreme pressure and high-cycle conditions every hour your machine is running, making its quality and compatibility non-negotiable. At Imara Engineering Supplies, we supply a complete range of OEM-quality excavator hydraulic pumps from main drive pumps and piston pumps to gear pumps and pilot pumps, all cross-referenced to your specific machine model for guaranteed fitment.

If your excavator is showing signs of sluggish movement, loss of digging force, slow cycle times, or abnormal noise from the pump bay, the hydraulic pump is the first system to inspect. Imara Engineering stocks high-demand hydraulic pump models for Komatsu, Caterpillar, Hitachi, Volvo, Doosan, Kobelco, and Bobcat excavators in ready inventory, so you are not waiting weeks for an overseas order when your machine goes down.

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204 products

Danfoss Pump 05817054 for BOMAG Road Roller Vibratory System

Danfoss Pump 05817054 for BOMAG Road Roller Vibratory System

Regular price $6,564.00
Sale price $6,564.00 Regular price $952.00
Hydraulic Gear Pump VOE14537295 For VOLVO EC460B Excavator

Hydraulic Gear Pump VOE14537295 14537295 For VOLVO EC460B Excavator

Regular price $1,111.00
Sale price $1,111.00 Regular price
Hydraulic Pilot/Gear Pump VOE14602247 For VOLVO EC480D

Hydraulic Pilot/Gear Pump VOE14602247 14602247 For VOLVO EC480D Excavator

Regular price $1,495.00
Sale price $1,495.00 Regular price
Hydraulic Axial Piston Pump VOE15191397 for Volvo A25F, A30F

Hydraulic Axial Piston Pump VOE15191397 15191397 For VOLVO A25F, A30F, A25G, A30G Articulated Trucks

Regular price $2,000.00
Sale price $2,000.00 Regular price
Hydraulic Pump VOE15020179 15020179 - VOLVO A25, A30 Loaders

Hydraulic Pumps

Hydraulic Pump VOE15020179 15020179 For VOLVO A25, A30 Wheel Loaders

Regular price $3,009.00
Sale price $3,009.00 Regular price
Hydraulic Load Sensing Pump VOE11308797 - Volvo L45F Loader

Hydraulic Load Sensing Pump VOE11308797 R902476029 for Volvo L45F, L45G, L50F, L50G Wheel Loaders

Regular price $3,635.00
Sale price $3,635.00 Regular price
Hydraulic Pump VOE11884583 11884583 for Volvo BL70 Loader

Hydraulic Pump VOE11884583 11884583 for Volvo BL70, BL71 Wheel Loaders

Regular price $3,624.00
Sale price $3,624.00 Regular price
Hydraulic Pump VOE11309604 for Volvo L40, L40B Wheel Loaders

Hydraulic Pump 11309604 VOE11309604 for Volvo L40, L40B, L45, L45B Wheel Loaders

Regular price $2,171.00
Sale price $2,171.00 Regular price
Hydraulic Pump VOE11411472 11411472 for Volvo A35F Hauler

Hydraulic Pump VOE11411472 11411472 for Volvo A35F, A35G, A40F, A40G Articulated Haulers

Regular price $167.00
Sale price $167.00 Regular price
Hydraulic Pump VOE15084861 15084861 for Volvo L120G Loader

Hydraulic Pump VOE15084861 15084861 17441854 for Volvo L120G, L120H Wheel Loaders

Regular price $3,030.00
Sale price $3,030.00 Regular price
Hydraulic Pump VOE11173680 11173680 for Volvo L70E Loader

Hydraulic Pump VOE11173680 11173680 for Volvo L70E Loader

Regular price $2,272.00
Sale price $2,272.00 Regular price
Hydraulic Pump Angle Sensor 729-12-21000 - Komatsu PC210-10

Hydraulic Pump Angle Sensor 729-12-21000 7291221000 for Komatsu PC210-10 PC200-10 PC215-10 PC240LC-10 PC490LC-11

Regular price $586.00
Sale price $586.00 Regular price $0.00
Hydraulic Gear Pump 14530502 for Volvo EC360

Hydraulic Gear Pump VOE14530502 14530502 for Volvo EC360B EC360C EC330B EC330C Excavator

Regular price $1,505.00
Sale price $1,505.00 Regular price
Hydraulic Pilot Pump HPV55 for Komatsu PC120-5

Hydraulic Pilot Pump HPV55 for Komatsu PC120-5 for Excavator

Regular price $303.00
Sale price $303.00 Regular price
Hydraulic Pump 708-1W-00153 for GD555-5 GD655-5

Hydraulic Main Pump 708-1W-00153 for Komatsu GD555-5 GD655-5 – Grader

Regular price $5,251.00
Sale price $5,251.00 Regular price
K5V140DTP-9N25 Hydraulic Main Pump for LiuGong LG925

Hydraulic Main Pump K5V140DTP-9N25 for LiuGong LG925 Wheel Loader

Regular price $2,828.00
Sale price $2,828.00 Regular price
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Main Hydraulic Pump 708-1L-00320 for Komatsu D65 Bulldozer

Regular price $16,103.00
Sale price $16,103.00 Regular price
Hydraulic Fan Motor Pump 708-1U-00133 for Komatsu D275A-5

Hydraulic Fan Motor Pump 708-1U-00133 for Komatsu D275A-5 Bulldozer

Regular price $5,503.00
Sale price $5,503.00 Regular price $3,722.00

Collection: Hydraulic Pumps

Types of Excavator Hydraulic Pumps We Supply

Excavator hydraulic systems use several distinct pump types, each serving a specific function within the circuit. Sourcing the wrong pump type even for the correct machine will result in incorrect flow rates, pressure mismatch, or outright incompatibility. Here is a breakdown of the four pump categories available at Imara Engineering:

Main Hydraulic Pumps

The main hydraulic pump is the primary drive pump on your excavator. It generates the high-pressure flow that powers all working functions: boom, arm, bucket, swing, and travel simultaneously under full load. A failing main pump typically presents as slow or weak attachment movement, excessive heat build-up, or a noticeable drop in breakout force. Imara Engineering supplies main hydraulic pump assemblies for a wide range of models, including Komatsu PC200, PC300, PC400, Caterpillar 320, 323, 330, Hitachi ZX200, ZX300, and more, all manufactured to OEM pressure and flow specifications.

Gear Pumps

Gear pumps are used in the auxiliary and charge circuits of excavators and construction machinery, delivering consistent low-to-medium pressure flow for functions such as pilot oil supply, cooling fan drives, and steering circuits on wheeled machines. Their simple internal design makes them highly durable, but they are still subject to wear from contaminated fluid and cavitation. We supply hydraulic gear pumps compatible with excavators, backhoe loaders, wheel loaders, and skid steer machines across all major brands.

Pilot Pumps

The pilot pump, also called a charge pump, is a small but mission-critical component. It generates the low-pressure pilot oil flow that activates your joystick controls and directional valves. When a pilot pump fails or degrades, your controls become unresponsive, sluggish, or erratic, even if the main hydraulic pump is still functioning correctly. Operators often mistake pilot pump failure for a control valve or joystick issue, making a correct diagnosis essential. Imara Engineering supplies pilot pumps compatible with all major excavator models, available as standalone units and as combined tandem assemblies with the main pump.

Piston Pumps

Axial piston pumps are the most common pump design used in modern excavators, offering variable displacement capability that allows the machine to adjust hydraulic output dynamically based on load demand. This variable displacement function is critical for fuel efficiency and system protection under high-cycle working conditions. Piston pumps operate at higher internal pressures than gear pumps and require precision-manufactured internal components to maintain performance over time. Our axial piston pumps are manufactured to OEM tolerance standards and are available for all major excavator brands and model series.

Common Signs Your Excavator Hydraulic Pump Needs Replacing

Catching hydraulic pump degradation early saves you from a full system failure and keeps your downtime to a minimum. Watch out for these warning signs:

  1. Slow or weak attachment movement — Loss of digging force or reduced boom/arm speed under normal working load.
  2. Abnormal noise from the pump — Whining, knocking, or grinding sounds indicate internal wear or cavitation.
  3. Overheating hydraulic oil — A degraded pump forces the system to work harder, generating excess heat.
  4. High-pressure warning light or error codes — System pressure falling below threshold triggers diagnostic alerts on modern machines.
  5. Visible external leakage — Oil weeping from pump seals or fittings indicates seal failure and internal pressure loss.

If you are experiencing one or more of these symptoms, contact Imara Engineering's parts team for a diagnosis and direct part recommendation before ordering.

Excavator Brands We Cover

Imara Engineering supplies hydraulic pumps compatible with all major excavator and construction equipment brands:

  • Komatsu — PC200, PC210, PC300, PC360, PC400 and full PC series
  • Caterpillar (CAT) — 320, 320D, 323, 325, 330, 336, and full E-series
  • Hitachi — ZX200, ZX210, ZX300, ZX330, ZX450 and full ZX/EX series
  • Volvo — EC210, EC240, EC290, EC380 and full EC series
  • Doosan — DX225, DX300, DX380 and full DX series
  • Kobelco — SK200, SK300, SK350 and full SK series
  • Bobcat — E35, E50, E85 and compact excavator range
  • Case — CX130, CX210, CX300 and full CX series

Don't see your model listed? Contact our parts specialists with your machine serial number, and we will source the correct pump for you.

OEM-Quality Aftermarket: What That Means for You

Many equipment owners are cautious about aftermarket hydraulic pumps and rightly so. Not all aftermarket parts are equal. At Imara Engineering, "OEM-quality aftermarket" means every pump we supply is manufactured to the original equipment specifications, with the same pressure ratings, displacement tolerances, port dimensions, and material grades as the genuine manufacturer part. Our pumps are not rebranded low-grade imports. They are precision-engineered replacements that deliver the same performance as a genuine pump at a significantly lower cost, allowing you to maintain your fleet without compromising on reliability or longevity.

Why Buy Your Hydraulic Pump from Imara Engineering?

  1. Guaranteed Fitment — Every pump is cross-referenced to your machine model and OEM part number before dispatch.
  2. OEM-Grade Manufacturing — Parts manufactured to original pressure, flow, and dimensional specifications.
  3. Ready Stock — High-demand pump models held in inventory for fast order processing and dispatch.
  4. Fast Delivery Across Africa — We ship to construction sites, fleet yards, and parts dealers across the continent and internationally.
  5. Parts Specialist Support — Our technical team matches your part before you order, no guesswork, no returns.

Frequently Asked Questions

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