Excavator Starter Motors
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Cat identifies 436-9104 as a 24-volt, 7.8-kilowatt single-start motor with an SAE 3 fixed aluminum flange, case ground, gear-reduction drive and IP6K7/9K sealing. The official compatible-model record lists C7.1 engines and Cat 320E, 323E and 329E excavator families, plus selected loaders, tractors, compactors and industrial equipment. Two archived product-only views have been cleaned from their obsolete black wrapper and standardized with EexcavaStart ownership marks. Confirm 436-9104, voltage, power, flange, pinion, terminals and machine serial range before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Cat Part Number | Official new starter identity | 436-9104 |
| Same-number Formatting Variant | Search alias only | 4369104 |
| Official Cat Reman Alternative | Remanufactured alternative; not a formatting alias | 30R-1702 |
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 Official Cat engine: C7.1, Official Cat excavators: 320E / 320E L / 320E LN / 323E / 323E L / 323E LN / 323E SA / 329E / 329E L / 329E LN, Additional official Cat equipment: 814/815/816 families, 950/962 loaders, D5R/D6N tractors and selected industrial machines, Fitment limitation: Confirm 436-9104, 24 V, 7.8 kW, SAE 3 flange, pinion, terminal layout and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 4369104. Remanufactured references: 30R-1702.
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.
