Alternators
EexcavaStart packaging illustration · Not a photograph of this exact part. Exact-unit photo availability is not confirmed; send your original part number and unit photos with your inquiry.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | YANMAR | 123910-77210 |
| Search Format Alias | Formatting variant only | 12391077210 |
| Cross-reference (fitment check required) | HITACHI ELECTRIC | LR180-763 |
| Cross-reference (fitment check required) | LESTER | 13629 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use photos of your original unit and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.
Product summary
Before ordering
Machine fitment
8 model references
Fitment / evidence notes
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
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. Recorded fitment/evidence notes: Fitment limitation: Confirm the original part number, electrical rating, pinion or pulley, terminals, mounting geometry and equipment serial range before ordering. Confirm the complete part number and machine serial range before ordering.
Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable. Formatting aliases for the same number: 12391077210.
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.
