Excavator Starter Motors
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600-813-2151 Starter Motor for Excavator and Diesel Equipment. EexcavaStart starter motor identified by reference 600-813-2151. Compare the complete part number, connector or mounting configuration, and the original product photos before ordering. Send the machine model, serial number, and nameplate photo for a fitment check.
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 | Official Komatsu number | 600-813-2151 |
| Manufacturer Part Number | Published Nikko number | 0-21000-4830 |
| Manufacturer Variant | Published Nikko suffix variant | 0-21000-4831 |
| Published Equipment Replacement | Verify mounting and terminal configuration | 600-813-2150 |
| Interchange Reference | Verify configuration | UD11085S / Wilson 91-28-4073 |
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: Komatsu 4D105-5C / 4D105-5D, Engine: Komatsu 4D94-2D / 4D94-2E / 4D94-2F / 4D94-2G / 4D94-2H / 4D94-2J / 4D94-2K, Equipment: Komatsu PC60 / D20 / EC30 / EC50 family, Fitment limitation: Confirm 600-813-2151 or 0-21000-4830, 24V, 9-tooth CW drive, engine suffix, flange, terminal layout and original nameplate power. Confirm the complete part number and machine serial range before ordering.
Documented direct interchanges: UD11085S / Wilson 91-28-4073. Manufacturer number: 0-21000-4830, 0-21000-4831.
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.
