Excavator Engine Parts

1K321-73030 Water Pump for Kubota D1703 V2203 V2403

Q: What numbers are documented for 1K321-73030?

Primary Equipment Part Number: 1K321-73030. Formatted Alias: 1K32173030. Published Replacement-Family Reference: 1E141-73033. Published Replacement-Family Reference: 1K321-73031. Published Replacement-Family Reference: 1K321-73032. Published Replacement-Family Reference: 1K321-73033. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 1K321-73030 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

1K321-73030 Water Pump for Kubota D1703 V2203 V2403, OEM/reference 1K321-73030, Engine Water Pump, product view 1

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OEM / reference1K321-73030

SpecificationEngine Water Pump

Catalog ID51035057

Product Type: Engine water pump
Housing Version: Long housing; compare port arrangement
Mounting Pattern: Compare all mounting holes with original
Pulley / Hub Interface: Compare with original
Condition: New replacement part

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.

Part-number relationships

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

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

1K321-73030

Formatting alias

1K32173030

Other documented relationship

1E141-73033
1K321-73031
1K321-73032
1K321-73033

Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.

Product summary

Engine Water Pump

Category: Excavator Engine Parts
Catalog ID: 51035057
Photo views: 4

Before ordering

Confirm these details

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.

Machine fitment

Compatible model references

4 model references

Published engine: Kubota D1703
Published engine: Kubota V2203
Published engine: Kubota V2403
Additional catalog engine: Kubota D1803 / WG2503; configuration check required

Fitment / evidence notes

Fitment limitation: Confirm housing, hose connection, hub, holes, engine and serial

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

Common questions about 1K321-73030

Which machines use 1K321-73030?

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. Recorded fitment/evidence notes: Fitment limitation: Confirm housing, hose connection, hub, holes, engine and serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 1K321-73030?

Formatting aliases for the same number: 1K32173030.

How do I confirm 1K321-73030 before ordering?

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.

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