Komatsu WA320 Pumps Guide

Komatsu WA320 pumps can vary by pump type, machine configuration, and serial number. This guide is designed to help customers researching pump applications for the Komatsu WA320 family move from general machine intent toward the correct part number.

Use this page to review example pump references by type, then continue through the pump hub system or use the site search once you have a likely part number. The Komatsu parts book for the exact machine serial number remains the final authority for fitment.

Common Model References in This Family

WA320 AVANCE CUSTOM SERIAL NO.20001 AND UP, WA320-1, WA320-1LC, WA320-3, WA320-3 ACTIVE, WA320-3CS, WA320-3L, WA320-3MC, and more

Hydraulic Pumps

Below are example hydraulic pumps references associated with the Komatsu WA320 family. Some may be stocked products and others may be quote-based references depending on current catalog coverage.

  • 07952-70004 — Grease Pump Ass'Y
  • 705-11-32340 — Pump Ass'Y.(Sar(2)40)
  • 705-11-34250 — Pump Ass'Y.(Sar(2)50)
  • 705-13-20540 — Pump Ass'Y.(Sar(2)8A)
  • 705-21-26060 — Pump Ass'Y.(Sal20)

Water Pumps

Below are example water pumps references associated with the Komatsu WA320 family. Some may be stocked products and others may be quote-based references depending on current catalog coverage.

  • 6735-61-1100 — Water Pump Ass'Y
  • 6136-61-1501 — Water Pump Ass'Y
  • 6136-61-1701 — Water Pump Ass'Y
  • The part specified in the line above can be used instead of this part6136-61-1500 — Water Pump Ass'Y
  • 1295 446 H92 — Pump, Water

Oil Pumps

Below are example oil pumps references associated with the Komatsu WA320 family. Some may be stocked products and others may be quote-based references depending on current catalog coverage.

  • 6735-51-1111 — Oil Pump Ass'Y
  • 6136-52-1100 — Oil Pump Ass'Y
  • 1242 039 H91 — Kit, Lube Oil Pump
  • NSS — Pump, Lube Oil
  • 6221-51-1100 — Oil Pump Ass'Y

Fuel & Injection Pumps

Below are example fuel & injection pumps references associated with the Komatsu WA320 family. Some may be stocked products and others may be quote-based references depending on current catalog coverage.

  • 6736-71-1120 — Injection Pump Ass'Y
  • 6137-72-1111 — Injection Pump Ass'Y
  • 6137-72-1112 — Injection Pump Ass'Y
  • DK101060-2470 — Pump Ass'Y
  • DK105210-4570 — Feed Pump Ass'Y

Gear Pumps

Below are example gear pumps references associated with the Komatsu WA320 family. Some may be stocked products and others may be quote-based references depending on current catalog coverage.

  • This part cannot be supplied as an individual part. It is supplied as an assembly. It however is supplied as an individual part by authorized distributors only.UC40202776061 — Gear Pump Ass'Y
  • UC40202776061 — Gear Pump Assembly
  • UCR902108800 — Gear Pump Housing

Additional Pump References

These additional pump references can help narrow the search for Komatsu WA320 pump applications.

  • 711-52-11120 — Pump
  • 07950-10450 — Pump
  • 423-974-1110 — Motor,Pump
  • 6136-31-1130 — Gear,Pump Drive
  • 07951-21022 — Nozzle, Grease Pump

Identification Notes

For Komatsu WA320 machines, pump selection should be confirmed using the machine model, serial number, and the parts-book diagram for the specific system application. Do not rely on model alone where serial-range changes or alternate pump arrangements may apply.

Where to Go Next

Need Help Confirming a Pump?

If you are researching a Komatsu WA320 pump and are not fully sure which part applies, gather the machine model, serial number, and any visible pump number before reaching out. That information can be used to guide you toward the correct pump and quote options.

For final confirmation, always verify against your Komatsu parts book for the exact machine serial number.