Alternators

3943492 12V 40A Alternator for CAT C1.1 C1.5

Q: What numbers are documented for 3943492?

Primary Part Number: 3943492. Source Catalog Number: 22129N. Catalog Cross-Reference - Verify Configuration: 052.001.703.206. Catalog Cross-Reference - Verify Configuration: 115455. Catalog Cross-Reference - Verify Configuration: 13.201.182. Catalog Cross-Reference - Verify Configuration: 22129. Catalog Cross-Reference - Verify Configuration: 240-4265. Catalog Cross-Reference - Verify Configuration: 556003RIP. Catalog Cross-Reference - Verify Configuration: 614-1863. Catalog Cross-Reference - Verify Configuration: 705.523.040.040. Catalog Cross-Reference - Verify Configuration: 705.523.040.240. Catalog Cross-Reference - Verify Configuration: 8600568. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3943492 before ordering?

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

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OEM / reference3943492

SpecificationAlternator

Catalog ID53384518

Product Type: Alternator
Product Brand: EexcavaStart
Technical Specification: 40 Amp/12 Volt, CW, V1
Design: IR/IF
Voltage: 12
Rated Output: 40
Rotation: CW
Pulley: V1
Condition: New replacement part

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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	Exact catalog identity	3943492
Source Catalog Number	Exact technical catalog record	22129N
Cross-reference (fitment check required)	Exact catalog record; configuration check required	052.001.703.206
Cross-reference (fitment check required)	Exact catalog record; configuration check required	115455
Cross-reference (fitment check required)	Exact catalog record; configuration check required	13.201.182
Cross-reference (fitment check required)	Exact catalog record; configuration check required	22129
Cross-reference (fitment check required)	Exact catalog record; configuration check required	240-4265
Cross-reference (fitment check required)	Exact catalog record; configuration check required	556003RIP
Cross-reference (fitment check required)	Exact catalog record; configuration check required	614-1863
Cross-reference (fitment check required)	Exact catalog record; configuration check required	705.523.040.040
Cross-reference (fitment check required)	Exact catalog record; configuration check required	705.523.040.240
Cross-reference (fitment check required)	Exact catalog record; configuration check required	8600568
Cross-reference (fitment check required)	Exact catalog record; configuration check required	A-1831
Cross-reference (fitment check required)	Exact catalog record; configuration check required	ASS135A
Cross-reference (fitment check required)	Exact catalog record; configuration check required	CAL42135AS
Cross-reference (fitment check required)	Exact catalog record; configuration check required	T415996

Product fitment guide

Part numbers and compatible models

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

Part identification

Reference numbers

Primary number

3943492

Cross-reference (fitment check required)

052.001.703.206
115455
13.201.182
22129
240-4265
556003RIP
614-1863
705.523.040.040
705.523.040.240
8600568
A-1831
ASS135A
CAL42135AS
T415996

Other documented relationship

22129N

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

Alternator

Category: Alternators
Catalog ID: 53384518
Photo views: 1

Before ordering

Confirm these details

Confirm voltage and rated amperage against the original alternator label.
Compare mounting ears, pulley type and pulley-groove count.
Check plug shape, terminal position and regulator connection.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

9 model references

Exact catalog application: Make: Caterpillar · Model: C1.1 · Year: 2007-2024 · Engine: L3 1.1L 69cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: C1.5 · Year: 2007-2024 · Engine: L3 1.5L 91cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: C1.5DE13.5 · Year: 2007-2024 · Engine: L3 1.5L 91cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: C2.2 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: C2.2DE18E 3 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: D20 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: D25 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: D30 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar
Exact catalog application: Make: Caterpillar · Model: XQP20 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar

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 3943492

Which machines use 3943492?

Recorded compatible model references include Exact catalog application: Make: Caterpillar · Model: C1.1 · Year: 2007-2024 · Engine: L3 1.1L 69cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: C1.5 · Year: 2007-2024 · Engine: L3 1.5L 91cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: C1.5DE13.5 · Year: 2007-2024 · Engine: L3 1.5L 91cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: C2.2 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: C2.2DE18E 3 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: D20 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: D25 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Exact catalog application: Make: Caterpillar · Model: D30 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar and 1 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3943492?

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 3943492 before ordering?

Confirm voltage and rated amperage against the original alternator label. Compare mounting ears, pulley type and pulley-groove count. Check plug shape, terminal position and regulator connection. Send clear photos of the original unit and connector layout when requesting a quote.