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Excavator Engine Parts

1A021-21310 Piston Pin for Kubota V2403 D1803 Engines

Name: 1A021-21310 Piston Pin for Kubota V2403 D1803 Engines
Brand: EexcavaStart
SKU: 1A021-21310

OEM / reference1A021-21310

SpecificationEngine Piston Pin

Catalog ID77631441

Piston wrist pin identified by Kubota part number 1A021-21310 for V2403 and D1803 engine families. Engine parts manuals and dealer records also list the pin in D1503, D1703, V2003 and V2203 applications. Confirm the complete engine suffix, pin diameter, length and piston design before ordering.

Fitment status: Verified · Checked 2026-07-28

Product Type: Engine Piston Pin
Product Brand: EexcavaStart
Part Name: Piston wrist pin / gudgeon pin
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.

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Kubota piston pin	1A021-21310
Formatted Alias	Same number without separator	1A02121310
Superseded Part Number	Earlier Kubota reference	14901-21310

Evidence record

Source: Exact-reference evidence retained for internal audit
Evidence grade: manufacturer-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

1A021-21310

Formatting alias

1A02121310

Other documented relationship

14901-21310

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

Product summary

Engine Piston Pin

Category: Excavator Engine Parts
Catalog ID: 77631441
Photo views: 3

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

Engine family: Kubota V2403 / D1803
Engine family: Kubota D1503 / D1703 / V2003 / V2203
Excavator example: Kubota KX121 / KX161 / U35 / U45
Fitment limitation: Confirm engine suffix, pin length and diameter

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 1A021-21310

Which machines use 1A021-21310?

Recorded compatible model references include Engine family: Kubota V2403 / D1803, Engine family: Kubota D1503 / D1703 / V2003 / V2203, Excavator example: Kubota KX121 / KX161 / U35 / U45, Fitment limitation: Confirm engine suffix, pin length and diameter. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 1A021-21310?

Formatting aliases for the same number: 1A02121310.

How do I confirm 1A021-21310 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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