Excavator Engine Parts
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Engine water pump identified by exact Kubota reference 1K321-73030. Independent catalog records consistently list Kubota D1703, V2203 and V2403 engine families. The previously recovered 1K141-73033 string is not supported by the checked catalogs and has been removed; catalogs instead show 1E141-73033 as a related replacement-family reference. Confirm the complete label, housing length, extra hose connection, hub, mounting-hole pattern, engine suffix and equipment serial before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Published Kubota reference | 1K321-73030 |
| Formatted Alias | Same number without punctuation | 1K32173030 |
| Published Replacement-Family Reference | Verify housing and ports | 1E141-73033 |
| Published Replacement-Family Reference | Verify housing and ports | 1K321-73031 |
| Published Replacement-Family Reference | Verify housing and ports | 1K321-73032 |
| Published Replacement-Family Reference | Verify housing and ports | 1K321-73033 |
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
5 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 Published engine: Kubota D1703, Published engine: Kubota V2203, Published engine: Kubota V2403, Additional catalog engine: Kubota D1803 / WG2503; configuration check required, Fitment limitation: Confirm housing, hose connection, hub, holes, engine and serial. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 1K32173030.
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.
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