Starter Motors

Starter Motor 204-9742 for Caterpillar 3126B 3126E C7

Q: What numbers are documented for 204-9742?

Primary Part Number: 204-9742. Related reference - verify configuration: SDR0120. Related reference - verify configuration: 113695. Related reference - verify configuration: 0R9727. Related reference - verify configuration: 8C4774. Related reference - verify configuration: 8C4775. Related reference - verify configuration: 10478811. Related reference - verify configuration: 1993831. Related reference - verify configuration: 1993918. Related reference - verify configuration: 410-12279. Related reference - verify configuration: 410-12279R. Related reference - verify configuration: 6266. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 204-9742 before ordering?

Match the complete part number, compare the connector or mounting arrangement with your original unit and the recorded specifications, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

EexcavaStart packaging illustration · Not a photograph of this exact part. Exact-unit photo availability is not confirmed; send your original part number and unit photos with your inquiry.

OEM / reference204-9742

SpecificationStarter Motor

Catalog ID91000757

Product Type: Starter Motor
Supply Brand: EexcavaStart
Equipment Brand: Caterpillar
Catalog Classification: Motor Gp-Elec -C
Application Records: 3
Condition: New replacement part
Gallery Representation: EexcavaStart neutral packaging illustration; actual product photograph pending
Reference limitation: Confirm original-unit ratings, mounting, connections and equipment serial range; related numbers do not guarantee universal interchange.

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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.

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Product reference; supplied-unit verification pending	204-9742
Cross-reference (fitment check required)	ARROWHEAD	SDR0120
Cross-reference (fitment check required)	CARGO	113695
Cross-reference (fitment check required)	CATERPILLAR	0R9727
Cross-reference (fitment check required)	CATERPILLAR	8C4774
Cross-reference (fitment check required)	CATERPILLAR	8C4775
Cross-reference (fitment check required)	DELCO	10478811
Cross-reference (fitment check required)	DELCO	1993831
Cross-reference (fitment check required)	DELCO	1993918
Cross-reference (fitment check required)	J&N Electrical Products	410-12279
Cross-reference (fitment check required)	J&N Electrical Products	410-12279R
Cross-reference (fitment check required)	LESTER	6266
Cross-reference (fitment check required)	LESTER	6405
Cross-reference (fitment check required)	NSA	STR-4340
Cross-reference (fitment check required)	WAI	6405N

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use photos of your original unit and the checklist before ordering.

Part identification

Reference numbers

Primary number

204-9742

Cross-reference (fitment check required)

SDR0120
113695
0R9727
8C4774
8C4775
10478811
1993831
1993918
410-12279
410-12279R
6266
6405
STR-4340
6405N

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

Starter Motor

Category: Starter Motors
Catalog ID: 91000757
Illustration views: 1

Before ordering

Confirm these details

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.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

1 model reference

Engine models: 3126B / 3126E / C7

Fitment / evidence notes

Fitment limitation: Confirm the exact part number, electrical rating, terminal layout, mounting and machine serial range before shipment

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

Common questions about 204-9742

Which machines use 204-9742?

Recorded compatible model references include Engine models: 3126B / 3126E / C7. Recorded fitment/evidence notes: Fitment limitation: Confirm the exact part number, electrical rating, terminal layout, mounting and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 204-9742?

Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable.

How do I confirm 204-9742 before ordering?

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.