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Excavator Engine Parts

129005-22080 STD Piston Assembly for Yanmar 3TNV88 4TNV88

Name: 129005-22080 STD Piston Assembly for Yanmar 3TNV88 4TNV88
Brand: EexcavaStart
SKU: 129005-22080

OEM / reference129005-22080

SpecificationStandard Piston Assembly

Catalog ID88237944

Standard-size piston assembly identified by Yanmar part number 129005-22080. Official Yanmar 3TNV88 and 4TNV88 parts catalogs list this number as PISTON ASSY and separately identify ring set 129005-22500 and piston pin 129202-22300. Oversize piston 129005-22900 is a different service size and must not be treated as a direct interchange. Confirm the complete number, engine suffix, standard bore, crown profile and pin dimensions before ordering.

Fitment status: Verified · Checked 2026-07-28

Product Type: Standard Piston Assembly
Product Brand: EexcavaStart
Nominal Bore Family: 88 mm
Piston Size: Standard
Related Piston Pin: D26 x L70
Supply Scope: Piston with rings as photographed
Supply Condition: Confirm with quotation

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Part-number relationships

Relationship	Reference family	Number
Primary Manufacturer Part Number	Yanmar standard piston assembly	129005-22080
Formatted Alias	Same number without separator	12900522080
Related Service Part	Standard piston ring set	129005-22500
Related Service Part	Piston pin D26 x L70	129202-22300
Oversize Service Part - Not Direct Interchange	0.25 mm oversize piston assembly	129005-22900

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

129005-22080

Formatting alias

12900522080

Direct interchange

129005-22900

Related assembly

129005-22500
129202-22300

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

Product summary

Standard Piston Assembly

Category: Excavator Engine Parts
Catalog ID: 88237944
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 family: Yanmar 3TNV88
Engine family: Yanmar 4TNV88
Fitment limitation: Confirm complete number, engine suffix, standard bore, crown profile and pin dimensions

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 129005-22080

Which machines use 129005-22080?

Recorded compatible model references include Engine family: Yanmar 3TNV88, Engine family: Yanmar 4TNV88, Fitment limitation: Confirm complete number, engine suffix, standard bore, crown profile and pin dimensions. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 129005-22080?

Documented direct interchanges: 129005-22900. Formatting aliases for the same number: 12900522080. Related assembly numbers (not direct interchanges): 129005-22500, 129202-22300.

How do I confirm 129005-22080 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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