Part identification
Reference numbers
Search with or without hyphens. Match the complete number on the original part.
5 verified product photos · Select a thumbnail to change the main image.
Alternators
3943492 12V 40A Alternator
OEM / reference3943492 · Exact reference verified
Specification40 Amp/12 Volt, CW, V1
Catalog ID53384518
Alternator referenced by 3943492. An exact part-number match confirms 9 application records and 17 related reference numbers. Verified configuration: 40 Amp/12 Volt, CW, V1. Confirm the complete part number, mounting arrangement, electrical connection and machine serial range before ordering.
- Reference Numbers
- 3943492
- Component Type
- Alternator
- Technical Specification
- 40 Amp/12 Volt, CW, V1
- Design
- IR/IF
- Voltage
- 12
- Rated Output
- 40
- Rotation
- CW
- Pulley Class
- V1
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
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.
Product summary
40 Amp/12 Volt, CW, V1
- Category
- Alternators
- Catalog ID
- 53384518
- Photo views
- 5
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
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 Make: Caterpillar · Model: C1.1 · Year: 2007-2024 · Engine: L3 1.1L 69cid Caterpillar, Make: Caterpillar · Model: C1.5 · Year: 2007-2024 · Engine: L3 1.5L 91cid Caterpillar, Make: Caterpillar · Model: C1.5DE13.5 · Year: 2007-2024 · Engine: L3 1.5L 91cid Caterpillar, Make: Caterpillar · Model: C2.2 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Make: Caterpillar · Model: C2.2DE18E 3 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Make: Caterpillar · Model: D20 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, Make: Caterpillar · Model: D25 · Year: 2007-2024 · Engine: L4 2.2L 135cid Caterpillar, 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 part numbers cross-reference with 3943492?
The recorded reference family includes 3943492, 22129N, 052.001.703.206, 115455, 13.201.182, 22129, 240-4265, 394-3492, 556003RIP, 614-1863, 705.523.040.040, 705.523.040.240 and 5 additional numbers listed above. Match the complete number and physical configuration before replacing the original part.
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.
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