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Excavator Alternators
Alternator identified by primary manufacturer number 102211-1750 and replacement number 104210-8120. Independent rotating-electrical catalogs identify Denso 102211-1750 and 104210-8120 as the 12V 80A, clockwise, five-groove alternator for Suzuki Aerio J20A and J23A applications. The recovered value 1012211-1750 contains an extra digit and is a source transcription error. Confirm the complete number, 12V system, 80A output, five-groove pulley, plug, mounting points and vehicle production date before ordering.
Fitment status: Verified · Checked 2026-07-27Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | Denso manufacturer identity | 102211-1750 |
| Same-number Formatting Variant | Punctuation-normalized search alias | 1022111750 |
| Manufacturer Part Number | Denso replacement identity | 104210-8120 |
| Equipment Manufacturer Number | Suzuki part identity | 31400-77E30 |
| Equipment Manufacturer Number | Suzuki part identity | 31400-59J00 |
| Source Catalog Number | WAI exact application record | 11086N |
Source URLs, catalog files and local evidence paths are stored in the protected product audit record and are not public outbound links.
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 Vehicle model: Suzuki Aerio, 2002-2003 engine: J20A 2.0L, 2004-2007 engine: J23A 2.3L, Fitment limitation: Verify production date, 12V system, 80A rating, five-groove pulley, plug clock and mounting dimensions. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 104210-8120, 31400-77E30, 31400-59J00. Formatting aliases for the same number: 1022111750.
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.
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