Excavator Starter Motors
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Isuzu 1811001890 is a 24V, 4.5kW, 11-tooth clockwise starter published for 6BD1 industrial engines. Exact-number catalogs list a 105mm flange, three-hole mount and cross-references including Nikko 0-21000-3291/0-21000-4470 and Hitachi S25-103. Confirm the complete Isuzu number, label, pinion, flange, terminals, engine arrangement and equipment 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 Part Number | Isuzu formatted reference | 1-81100-189-0 |
| Compact Search Alias | Same Isuzu number without separators | 1811001890 |
| Manufacturer Cross-References | Nikko family | 0-21000-3291 / 0-21000-4470 |
| Manufacturer Cross-Reference | Hitachi family | S25-103 |
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
3 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 Verified engine: Isuzu 6BD1, Published equipment contexts: Industrial engines, forklifts and heavy equipment, Fitment limitation: Confirm number, label, pinion, flange, terminals, engine and serial. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 0-21000-3291 / 0-21000-4470, S25-103. Formatting aliases for the same number: 1811001890.
Confirm voltage and power rating against the original starter nameplate. Compare mounting-hole pattern, flange position and overall body orientation. Confirm pinion tooth count and rotation where those values are specified. Send clear photos of the original unit and connector layout when requesting a quote.
