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Excavator Engine Parts

1K321-73430 Water Pump Gasket for Kubota D1803 V2403 Engines

Name: 1K321-73430 Water Pump Gasket for Kubota D1803 V2403 Engines
Brand: EexcavaStart
SKU: 1K321-73430

OEM / reference1K321-73430

SpecificationWater Pump Gasket

Catalog ID51035214

Water-pump gasket identified by Kubota part number 1K321-73430. Kubota D1803 and V2403 engine-parts manuals list this gasket in the water-pump assembly, and the V2403-5 listing associates it with water pump 1K321-73030. Confirm engine suffix, pump casting, mounting-hole pattern and gasket outline.

Fitment status: Verified · Checked 2026-07-28

Product Type: Water Pump Gasket
Product Brand: EexcavaStart
Installation Area: Engine water-pump housing
Material: Confirm against removed gasket
Condition: New replacement part

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Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Kubota water-pump gasket	1K321-73430
Formatted Alias	Same number without separators	1K32173430
Related Assembly Number	V2403-5 water pump using this gasket	1K321-73030

Evidence record

Source: Exact-reference evidence retained for internal audit
Evidence grade: multi-source-supported
Checked: 2026-07-28

Source URLs, catalog files and local evidence paths are stored in the protected product audit record and are not public outbound links.

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

1K321-73430

Formatting alias

1K32173430

Related assembly

1K321-73030

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

Water Pump Gasket

Category: Excavator Engine Parts
Catalog ID: 51035214
Photo views: 5

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

3 model references

Engine model: Kubota D1803-CR-TIE4B
Engine model: Kubota V2403 / V2403-5
Fitment limitation: Confirm engine suffix, pump casting and gasket-hole pattern

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 1K321-73430

Which machines use 1K321-73430?

Recorded compatible model references include Engine model: Kubota D1803-CR-TIE4B, Engine model: Kubota V2403 / V2403-5, Fitment limitation: Confirm engine suffix, pump casting and gasket-hole pattern. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 1K321-73430?

Formatting aliases for the same number: 1K32173430. Related assembly numbers (not direct interchanges): 1K321-73030.

How do I confirm 1K321-73430 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 recovered references from the same system.

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