Excavator Starter Motors
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Planetary gear-reduction starter motor identified by manufacturer type AZE4173 and type number 11.131.781. The manufacturer application bulletin confirms 12V, 3.2 kW, ten pinion teeth and Perkins 1103D/1104D engine families. Confirm the Perkins or equipment number, three-hole flange and terminal layout before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Type | Iskra/Letrika starter type | AZE4173 |
| Manufacturer Part Number | Iskra/Letrika type number | 11.131.781 |
| Equipment Part Numbers | Perkins starter numbers | 2873K405 / 2873K624 / 2873K625 / T400269 |
| Equipment Part Numbers | Caterpillar and JCB references | 225-3149 / 312-7540 / 71440231 |
| Aftermarket Cross References | Starter family references | IS1201 / MS399 / 18940N |
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 Cataloged Perkins engine: 1103D-33 / 1103D-33T / 1103D-33TA, Cataloged Perkins engine: 1104D-44 / 1104D-44T / 1104D-44TA, Fitment limitation: Confirm equipment number, flange, teeth and terminals. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 11.131.781.
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.
