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Excavator Engine Parts

6150-31-6220 Idler Gear Bushing for Komatsu 6D125 S6D125 SAA6D125E

Name: 6150-31-6220 Idler Gear Bushing for Komatsu 6D125 S6D125 SAA6D125E
Brand: EexcavaStart
SKU: 6150-31-6220

OEM / reference6150-31-6220

SpecificationIdler Gear Bushing

Catalog ID81641673

Idler-gear bushing identified by Komatsu part number 6150-31-6220. Komatsu's official parts page identifies it as an engine bushing; application records place it in 6D125/S6D125/SAA6D125E gear assemblies and selected SA6D170E/SAA6D170E applications. Confirm outer diameter, inner diameter, width, oil-hole/groove arrangement and the exact gear assembly before installation.

Fitment status: Verified · Checked 2026-07-28

Product Type: Idler Gear Bushing
Product Brand: EexcavaStart
Installation Area: Engine idler-gear assembly
Compatible Engine Family: Komatsu 6D125 / S6D125 / SAA6D125E
Condition: New replacement part

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Part-number relationships

Relationship	Reference family	Number
Primary Equipment Part Number	Komatsu idler-gear bushing	6150-31-6220
Normalized Search Alias	Formatting-only alias; not a separate interchange	6150316220

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

6150-31-6220

Formatting alias

6150316220

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

Product summary

Idler Gear Bushing

Category: Excavator Engine Parts
Catalog ID: 81641673
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: Komatsu 6D125 / S6D125
Engine family: Komatsu SAA6D125E
Recorded engine family: Komatsu SA6D170E / SAA6D170E
Fitment limitation: Confirm OD, ID, width, oil-hole/groove arrangement and the exact mating idler-gear assembly

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 6150-31-6220

Which machines use 6150-31-6220?

Recorded compatible model references include Engine family: Komatsu 6D125 / S6D125, Engine family: Komatsu SAA6D125E, Recorded engine family: Komatsu SA6D170E / SAA6D170E, Fitment limitation: Confirm OD, ID, width, oil-hole/groove arrangement and the exact mating idler-gear assembly. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 6150-31-6220?

Formatting aliases for the same number: 6150316220.

How do I confirm 6150-31-6220 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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