OEM Pump Distribution Gear for Komatsu PC4000 (ref. 937 399 40)
A pump distribution gear (PTO gearbox) drives the hydraulic pumps from the engine and splits power between them. Distribution gearboxes wear at the gear teeth and bearings; correct alignment and clean oil are critical to service life.
Key facts
- Part: Pump Distribution Gear, new replacement for Komatsu PC4000
- Komatsu OEM ref.: 937 399 40 (also written 93739940)
- Interchangeable references: 1 additional Komatsu numbers (listed below), incl. 922 590 40
- Fits: Komatsu PC4000 (mining excavator)
- Condition: New, to OEM specification
- HD Mining Parts SKU: KMP-PDG-1JT678
- Supplied by: HD Mining Parts (worldwide export, quote-based)
Interchangeable reference numbers
This part is interchangeable with the following Komatsu reference numbers (including superseded and alternative references) and can be supplied in place of any of them. Each is shown with and without spaces:
- 922 590 40 / 92259040
Each part is matched by reference number and technically verified before dispatch, with traceable sourcing and export-ready delivery; availability and lead time on request.
Frequently asked questions
What part is Komatsu OEM number 937 399 40?
It is the pump distribution gear for Komatsu PC4000; HD Mining Parts supplies a new replacement under SKU KMP-PDG-1JT678.
Is 922 590 40 interchangeable with 937 399 40?
Yes, 922 590 40 (92259040) is an interchangeable Komatsu reference for this pump distribution gear and can be replaced by it.
Request Komatsu OEM ref. 937 399 40, or browse all Gearboxes and Komatsu PC4000 spare parts, or request a quotation.