Excavator Alternators

EexcavaStart 123910-77210 12V 80A Alternator for Komatsu WB140PS-2 WB150AWS-2 WB150WSC-2

Q: What numbers are documented for 123910-77210?

Primary Manufacturer Part Number: 123910-77210. Search Format Alias: 12391077210. Interchange Reference: LR180-763. Interchange Reference: 13629. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 123910-77210 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.

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OEM / reference123910-77210

Specification12V 80A Alternator

Catalog ID45811056

12V 80A Alternator reference 123910-77210. Compare the complete part number, connector layout, mounting points and original unit before ordering; machine serial range can affect fitment.

Product Type: Alternator
Product Brand: EexcavaStart
Item Condition: Aftermarket Part
Unit Type: Alternator
Clock: 0.5
Amperage: 80
Fan Type: Internal
Pulley Type: Solid
Regulator: Internal
Voltage: 12
Image Disclosure: EexcavaStart labeled packaging placeholder; product photo pending

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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 Manufacturer Part Number	YANMAR	123910-77210
Search Format Alias	Formatting variant only	12391077210
Interchange Reference	HITACHI ELECTRIC	LR180-763
Interchange Reference	LESTER	13629

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

123910-77210

Formatting alias

12391077210

Direct interchange

LR180-763
13629

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

Product summary

12V 80A Alternator

Category: Excavator Alternators
Catalog ID: 45811056
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

9 model references

Komatsu WB140PS-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2007
Komatsu WB150AWS-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006
Komatsu WB150WSC-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006
Komatsu WB91R-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006
Komatsu WB93R-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006
Komatsu WB97R-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2005
Komatsu WB97S-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2005
Komatsu WB98A-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2005
Fitment limitation: Confirm the original part number, electrical rating, pinion or pulley, terminals, mounting geometry and equipment serial range before ordering

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 123910-77210

Which machines use 123910-77210?

Recorded compatible model references include Komatsu WB140PS-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2007, Komatsu WB150AWS-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006, Komatsu WB150WSC-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006, Komatsu WB91R-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006, Komatsu WB93R-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2006, Komatsu WB97R-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2005, Komatsu WB97S-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2005, Komatsu WB98A-2: Equipment type: Backhoe Loader; Engine: S4D106; Year: 2005 and 1 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 123910-77210?

Documented direct interchanges: LR180-763, 13629. Formatting aliases for the same number: 12391077210.

How do I confirm 123910-77210 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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