Starter Motors
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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Cat Part Number | Official 24V electric starting motor | 354-5671 |
| Same-number Formatting Variant | Search alias only | 3545671 |
| Official Cat Reman Alternative | Remanufactured alternative; not a formatting alias | 20R-4877 |
| Same-number Formatting Variant | Search alias for reman alternative only | 20R4877 |
| Cross-reference (fitment check required) | DENSO | 428000-9120 |
| Cross-reference (fitment check required) | DENSO | 428000-9121 |
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. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.
Product summary
Before ordering
Machine fitment
4 model references
Fitment / evidence notes
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 family: C7.1, Official Cat excavator families: 320D / 320D2 / 320E / 323D2 / 323E / 323F / 324E, Official Cat excavator families: 326D2 / 326F / 329D2 / 329E / 329F / 330D2 / 330F / 335F, Other official equipment families: 924 / 926 / 930 / 938 / 950 / 962 loaders; D4 / D6K track tractors; PL61 pipelayer. Recorded fitment/evidence notes: Fitment limitation: Confirm 354-5671, 24 V, SAE No. 1 mounting, pinion configuration and machine serial range. Confirm the complete part number and machine serial range before ordering.
Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable. Formatting aliases for the same number: 3545671, 20R4877. Remanufactured references: 20R-4877.
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.
