Excavator Alternators

129423-77200 12V 40A Alternator for Yanmar 3TNV82 3TNV88 4TNE84

Q: What numbers are documented for 129423-77200?

Primary Part Number: 129423-77200. Manufacturer Part Number: 101211-1170. Equipment Manufacturer Number: AM879908. Equipment Manufacturer Number: LVA12357. Equipment Manufacturer Number: TY25243. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 129423-77200 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

129423-77200 12V 40A Alternator for Yanmar 3TNV82 3TNV88 4TNE84, OEM/reference 129423-77200, Alternator, product view 1

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OEM / reference129423-77200

SpecificationAlternator

Catalog ID53238532

Denso-pattern alternator identified by Yanmar number 129423-77200 and Denso number 101211-1170. Technical and application references record 12V, 40A, clockwise rotation and an integrated regulator for Yanmar 3TNV82, 3TNV88 and 4TNE84 engine applications, including selected John Deere, Volvo, Case and compact-equipment installations. Confirm the pulley, connector and machine serial range before ordering.

Product Type: Alternator
Product Brand: EexcavaStart
Rated Voltage: 12V
Rated Current: 40A
Rotation: CW
Regulator Type: Integrated IC regulator
Pulley Diameter: 69.2 mm
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	Yanmar equipment number	129423-77200
Manufacturer Part Number	Denso manufacturer number	101211-1170
Equipment Manufacturer Number	John Deere equipment number	AM879908
Equipment Manufacturer Number	John Deere equipment number	LVA12357
Equipment Manufacturer Number	John Deere equipment number	TY25243

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

129423-77200

Manufacturer number

101211-1170
AM879908
LVA12357
TY25243

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: 53238532
Photo views: 8

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

4 model references

Engine family: Yanmar 3TNV82, 3TNV82A and 3TNV88
Engine family: Yanmar 3TNV70, 3TNV76 and 4TNE84
Machine application: Selected John Deere 27D, 110 TLB and Volvo EC27C equipment
Fitment limitation: Confirm pulley, connector, mounting and machine 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 129423-77200

Which machines use 129423-77200?

Recorded compatible model references include Engine family: Yanmar 3TNV82, 3TNV82A and 3TNV88, Engine family: Yanmar 3TNV70, 3TNV76 and 4TNE84, Machine application: Selected John Deere 27D, 110 TLB and Volvo EC27C equipment, Fitment limitation: Confirm pulley, connector, mounting and machine serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 129423-77200?

Manufacturer number: 101211-1170, AM879908, LVA12357, TY25243.

How do I confirm 129423-77200 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.

Continue comparing verified references from the same system.

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