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Komatsu Hydraulic Pumps for Excavators & Equipment

People widely recognise Komatsu machines for smooth and controlled operation.

Operators notice this through steady movement, balanced response, and consistent handling under load. This level of control begins with the komatsu hydraulic pumps.

In any komatsu hydraulic system, the pump does more than generate pressure. It determines how the machine reacts, distributes power, and maintains system stability during demanding tasks.

At Imara Engineering Supplies, we supply aftermarket Komatsu pumps and OEM-standard units. 

They restore original machine performance across many Komatsu machines.

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32 products

PC220LC-8 Excavator Pump | Hydraulic Excavator Pump

Main Hydraulic Pump 708-2L-00600 for Komatsu PC220LC-8 Excavator

Regular price £3,245.00
Sale price £3,245.00 Regular price
Hydraulic Pump 705-58-46000 for Komatsu WA600-1 WA600-1H WA600-1L Wheel Loader

Hydraulic Pump 705-58-46000 for Komatsu WA600-1 WA600-1H WA600-1L Wheel Loader

Regular price £2,783.00
Sale price £2,783.00 Regular price
Hydraulic Pump 705-56-44010 for Komatsu WA600-1 Wheel Loader

Hydraulic Pump 705-56-44010 for Komatsu WA600-1 Wheel Loader

Regular price £3,047.00
Sale price £3,047.00 Regular price
Hydraulic Pump 705-52-30281 for Komatsu WA450-3 WA450L-3 WA470-3 Wheel Loader

Hydraulic Pump 705-52-30281 for Komatsu WA450-3 WA450L-3 WA470-3 Wheel Loader

Regular price £1,575.00
Sale price £1,575.00 Regular price
Hydraulic Pump 705-52-40130 for Komatsu WA450-3 WA470-3 Wheel Loader

Hydraulic Pump 705-52-40130 for Komatsu WA450-3 WA470-3 Wheel Loader

Regular price £1,524.00
Sale price £1,524.00 Regular price
Hydraulic Pump 705-12-40040 for Komatsu WA450-1 WA470-1 WA500-1 Wheel Loader

Hydraulic Pump 705-12-40040 for Komatsu WA450-1 WA470-1 WA500-1 Wheel Loader

Regular price £544.00
Sale price £544.00 Regular price
Hydraulic Pump 705-52-20240 for Komatsu WA450-1 WA450-2 WA470-1 Wheel Loader

Hydraulic Pump 705-52-20240 for Komatsu WA450-1 WA450-2 WA470-1 Wheel Loader

Regular price £382.00
Sale price £382.00 Regular price
Hydraulic Pump 705-12-36010 for Komatsu GD805A-1 Motor Grader

Hydraulic Pump 705-12-36010 for Komatsu GD805A-1 Motor Grader

Regular price £533.00
Sale price £533.00 Regular price
Hydraulic Pump 708-1H-00111 for Komatsu D155AX-3 D155AX-5 Bulldozer

Hydraulic Pump 708-1H-00111 for Komatsu D155AX-3 D155AX-5 Bulldozer

Regular price £6,763.00
Sale price £6,763.00 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 £2,949.00
Sale price £2,949.00 Regular price £1,995.00
Hydraulic Pump 708-1S-00320 for Komatsu PC27MR-3 Excavator

Hydraulic Pump 708-1S-00320 7081S00320 for Komatsu PC27MR-3 Excavator

Regular price £3,679.00
Sale price £3,679.00 Regular price
Hydraulic Main Pump 418-18-31102 4181831102 - Komatsu WA250

Hydraulic Main Pump 418-18-31102 4181831102 for Komatsu WA250, WA320, WA380, WA470, WA480 Loader

Regular price £4,599.00
Sale price £4,599.00 Regular price
Seal Kit for K5V160DT Kawasaki Pump | OEM Parts

Seal Kit for K5V160DT Kawasaki Hydraulic Pump

Regular price £60.00
Sale price £60.00 Regular price
Hydraulic Pilot Pump HPV55 for Komatsu PC120-5

Hydraulic Pilot Pump HPV55 for Komatsu PC120-5 for Excavator

Regular price £163.00
Sale price £163.00 Regular price
Komatsu Piston Assy Repair Kit 708-1U-13110 - New

Piston Assy Hydraulic Pump Repair Kit 708-1U-13110 for Komatsu Excavator

Regular price £249.00
Sale price £249.00 Regular price
BLOCK CYLINDER 708-1W-43110 for Komatsu WA Models

Block Cylinder 708-1W-43110 for Komatsu for Excavator

Regular price £374.00
Sale price £374.00 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 £2,813.00
Sale price £2,813.00 Regular price
Komatsu PC220-7 Excavator Hydraulic Pump 708-2L-00112

Hydraulic Pump 708-2L-00112 for Komatsu PC220-7 Excavator

Regular price £5,373.00
Sale price £5,373.00 Regular price

Collection: Komatsu Hydraulic Pumps

Early Signs of Pump Wear in Komatsu Machines

Hydraulic pump wear often develops gradually rather than as sudden failure.

Common signs include:

  • Slight delay in system response
  • Uneven movement during combined functions
  • Reduced control during fine operations
  • Increased resistance during operation

These changes may appear minor, but they reduce efficiency and affect operator control over time.

Replacing the komatsu excavator pump restores smooth operation and improves machine handling.

Why Pump Stability Is Critical in Komatsu Systems

A komatsu hydraulic system is designed for coordinated movement.

Multiple functions operate at the same time, including:

  • Boom
  • Arm
  • Swing
  • Travel

For this coordination to remain stable, the excavator hydraulic pump komatsu must:

  • Maintain steady flow across circuits
  • Adjust output based on load demand
  • Prevent pressure drop during operation
  • Distribute power evenly across functions

If the pump loses stability, the system becomes less predictable and harder to control.

Selecting the Right Pump for Komatsu Equipment

Selecting a pump is not only about physical fit.

A correct komatsu main pump replacement must match how the system behaves during operation.

Key factors include:

  • Flow response under load
  • Pressure control behaviour
  • Interaction with control valves
  • Machine-specific system setup

Two pumps may appear similar but can perform differently once installed. These differences affect how the machine responds in real working conditions.

Pump Performance in Multi-Function Operation

Komatsu machines are built to perform several actions at once.

For example:

  • Digging while rotating
  • Lifting while travelling
  • This places a continuous demand on the excavator hydraulic pump.

The pump must:

  • Maintain stable pressure levels
  • Adjust flow quickly across circuits
  • Keep movement smooth and controlled

High-quality komatsu hydraulic pumps are designed to support this level of performance without delay.

When to Replace a Komatsu Hydraulic Pump

Pump wear affects overall system performance.

You may need a komatsu main pump replacement if you notice:

  • Loss of smooth operation
  • Poor coordination between functions
  • Increased heat within the hydraulic system
  • Higher fuel consumption
  • Reduced efficiency under load
  • These signs indicate that the pump no longer maintains system balance.

Replacement Compared to Repair

Pump repair may restore partial function, but it does not always recover full system performance.

A replacement unit provides:

  • Consistent output across working conditions
  • Improved control response
  • Reduced risk of repeat failure
  • Stable operation in demanding environments

For most heavy machinery, replacement offers a more reliable long-term solution.

OEM-Standard Komatsu Pump Solutions

We supply pumps built to match original system performance.

Each unit is designed to:

  1. Integrate with existing komatsu hydraulic systems
  2. Deliver stable pressure and flow
  3. Work with installed control components
  4. Support long service life

These pumps are engineered to perform in line with original machine expectations.

Why Choose Imara Engineering Supplies

Hydraulic performance depends on correct part selection.

We provide:

  • Reliable komatsu hydraulic pumps
  • Support with model and system identification
  • Fast supply for urgent replacement needs
  • Durable replacement parts for heavy machinery

Our goal is to restore full system performance and reduce downtime.

Frequently Asked Questions

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