Excavator Alternators
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24V alternator voltage regulator identified by primary reference 12-015 and manufacturer reference 13531100. Exact EexcavaStart product photographs show the regulator module, while a regulator catalog and the exact EexcavaStart listing support 4JJ1 and 4JJ1X engine use, including SH125X-3B applications. Confirm the connector, mounting holes and charging-system configuration before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | Exact product identity | 12-015 |
| Manufacturer Part Number | Exact regulator catalog record | 13531100 |
| Catalog Cross-Reference - Verify Configuration | Exact EexcavaStart listing; connector check required | RK9915A |
| Catalog Cross-Reference - Verify Configuration | Exact EexcavaStart listing; connector check required | 310N10718Z |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
4 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
Recorded compatible model references include Engine model: 4JJ1, Engine model: 4JJ1X, Machine model: SH125X-3B, Fitment limitation: Confirm connector, mounting holes and charging-system configuration. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 13531100.
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.
