Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | WA320-6 hydraulic charging pump | 705-56-36051 |
| Related Previous-Generation Reference | WA320-5 records; interchange not proven | 705-56-36050 |
Excavator Hydraulic Spare Parts
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Multi-section hydraulic gear-pump assembly identified by part number 705-56-36051 for Komatsu WA320-6 and WA320PZ-6 wheel loaders. Catalog descriptions record the SAR90+32+SB18 configuration. Confirm the original number, section stack, shaft, flange, ports and loader serial range.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | WA320-6 hydraulic charging pump | 705-56-36051 |
| Related Previous-Generation Reference | WA320-5 records; interchange not proven | 705-56-36050 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Catalog-supported loaders: Komatsu WA320-6 / WA320PZ-6, Related model-generation record: WA320-5 references may use 705-56-36050; verify before substitution, Fitment limitation: Confirm original number, section stack, shaft, flange, ports and serial range. Confirm the complete part number and machine serial range before ordering.
Related assembly numbers (not direct interchanges): 705-56-36050.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
Continue comparing verified references from the same system.