Excavator Starter Motors
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357-5204 is a 12V, 4.2kW, 10-tooth clockwise PLGR starter cataloged for Cat C6.6 industrial engines and D3K, D4K and D5K machine families. Additional exact-number records include Cat C4.4/C7.1 and Perkins/JCB applications. Confirm 357-5204, 12V rating, 10-tooth pinion, mounting, terminals, engine arrangement 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 Part Number | Cat formatted reference | 357-5204 |
| Compact Search Alias | Same Cat number without separator | 3575204 |
| Manufacturer Cross-Reference | Mahle/Letrika reference | IS1193 |
| Catalog Cross-Reference - Verify Configuration | Published starter family | MS400 |
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 Verified engine: Cat C6.6, Published machine families: Cat D3K / D4K / D5K, Additional published leads: Cat C4.4 / C7.1 and related Perkins/JCB equipment, Fitment limitation: Confirm number, voltage, teeth, mount, terminals, engine and serial. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: IS1193. Formatting aliases for the same number: 3575204.
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.
