Excavator Engine Parts

129001-02931 Main Bearing Set for Yanmar 4JH Series

Name: 129001-02931 Main Bearing Set for Yanmar 4JH Series
Brand: EexcavaStart
SKU: 129001-02931

1 / 4

4 product photos · Swipe on mobile, or hover and select a thumbnail.

OEM / reference129001-02931

SpecificationMain Bearing Set

Catalog ID87372795

129001-02931 is cataloged as the standard main-bearing metal assembly in Yanmar 4JH cylinder-block diagrams. Published examples include 4JH4-HTE1, 4JH57 and 4JH110 variants, with five bearing pieces specified per engine assembly. The owned gallery shows one consistent wrapped main-bearing set. The former 3TNE84/3TNV88/4TNV88 application claim is removed because it is not supported by the retained catalog pages. Confirm part number, engine suffix, bearing grade and crankshaft dimensions.

Product Type: Main bearing set
Catalog Description: METAL ASSY, MAIN
Catalog Quantity: 5 per published engine assembly
Bearing Grade: Standard; verify crankshaft journal before ordering
Condition: New replacement part

Send email inquiry Ask on WhatsApp Return to catalog

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 Yanmar Part Number	Cataloged standard main-bearing metal assembly	129001-02931
Undersize Main-Bearing Reference	Separate 0.25 undersize catalog item; not a direct interchange	129150-02871

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

129001-02931

Other documented relationship

129150-02871

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

Product summary

Main Bearing Set

Category: Excavator Engine Parts
Catalog ID: 87372795
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

3 model references

Yanmar 4JH Examples: 4JH4-HTE1 / 4JH57 / 4JH110 and related cataloged variants
Catalog Position: Cylinder block / crankshaft main-bearing location
Fitment Limitation: Confirm 129001-02931, engine suffix, bearing grade, crankshaft dimensions and serial range

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 129001-02931

Which machines use 129001-02931?

Recorded compatible model references include Yanmar 4JH Examples: 4JH4-HTE1 / 4JH57 / 4JH110 and related cataloged variants, Catalog Position: Cylinder block / crankshaft main-bearing location, Fitment Limitation: Confirm 129001-02931, engine suffix, bearing grade, crankshaft dimensions and serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 129001-02931?

No alternate number is listed for 129001-02931. Send the original nameplate for an alternate-number check.

How do I confirm 129001-02931 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.

Browse this category