Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | Exact identity retained from the supplied application catalog | YM129423-77200 |
Excavator Alternators
Alternator YM129423-77200 for Komatsu WA50-6 4D88-6
Brand illustration · Exact product photo available on request.
OEM / referenceYM129423-77200
SpecificationAlternator
Catalog ID91001665
Part number YM129423-77200 is recorded in the supplied equipment catalog as an alternator used on selected Komatsu machines. The source set contains 16 supporting catalog rows. Recorded machine applications include WA50-6; recorded engine references include 4D88-6. Confirm the complete part number, electrical rating, terminals, mounting arrangement and machine serial range against the original unit before ordering.
- Product Type
- Alternator
- Supply Brand
- EexcavaStart
- Equipment Brand
- Komatsu
- Catalog Classification
- Alternator A. (40A),(See Fig.A6010-B0A1)
- Application Records
- 16
- Condition
- New replacement part
- Gallery Representation
- EexcavaStart neutral packaging illustration; exact product photo available on request
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
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
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Alternator
- Category
- Excavator Alternators
- Catalog ID
- 91001665
- Photo views
- 1
Before ordering
Confirm these details
- Confirm voltage and rated amperage against the original alternator label.
- Compare mounting ears, pulley type and pulley-groove count.
- Check plug shape, terminal position and regulator connection.
- Verify the engine model and machine serial range before ordering.
Machine fitment
Compatible model references
3 model references
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 YM129423-77200
Which machines use YM129423-77200?
Recorded compatible model references include Machine models: WA50-6, Engine models: 4D88-6, Fitment limitation: Confirm the exact part number, electrical rating, terminal layout, mounting and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for YM129423-77200?
No alternate number is listed for YM129423-77200. Send the original nameplate for an alternate-number check.
How do I confirm YM129423-77200 before ordering?
Confirm voltage and rated amperage against the original alternator label. Compare mounting ears, pulley type and pulley-groove count. Check plug shape, terminal position and regulator connection. Send clear photos of the original unit and connector layout when requesting a quote.