Excavator Alternators
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Alternator identified by John Deere part number RE509648. John Deere's official product record publishes a 70-amp alternator and lists 317, 320, 325, 328 and 332 equipment families, with RE529377 as the official substitute. Four reviewed owned product views are retained. Confirm the 12V system, six-groove pulley, connector, mounting pattern and machine serial before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Manufacturer Part Number | John Deere alternator | RE509648 |
| Official Substitute Part Number | John Deere substitute | RE529377 |
| Remanufactured Service Number | Cataloged remanufactured replacement | SE501831 |
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 Published John Deere equipment: 317 / 320 / 325 / 328 / 332, Related loader family - verify serial: 313 / 315 / 318D / 320D / 326D / 328D / 332D, John Deere catalog applications: 317 and 320 Skid-Steers, 325 and 328 Skid Steers, 332 Skid Steer, Fitment limitation: Confirm pulley, connector, mounting pattern and machine serial. Confirm the complete part number and machine serial range before ordering.
Remanufactured references: SE501831.
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.
