Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | Exact identity retained from the supplied application catalog | 3E-7577 |
Excavator Alternators
Caterpillar 3E-7577 Alternator for 11 11SU 11U
Brand illustration · Exact product photo available on request.
OEM / reference3E-7577
SpecificationAlternator
Catalog ID91000735
The supplied Caterpillar application catalog identifies 3E-7577 as an alternator assembly. The source set contains 164 supporting catalog rows. Recorded machine applications include 11, 11SU, 11U, 120H, 120H ES, 120H NA; recorded engine references include 3114, 3126B, 3176B, 3176C. Confirm the complete part number, electrical rating, terminals, mounting arrangement and machine serial range against the original unit before ordering.
- Product Type
- Alternator
- Supply Brand
- EexcavaStart
- Equipment Brand
- Caterpillar
- Catalog Classification
- Alternator Gp -B
- Application Records
- 164
- Condition
- New replacement part
- Gallery Representation
- EexcavaStart neutral packaging illustration; exact product photo available on request
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.
Part identification
Reference numbers
Primary number
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Alternator
- Category
- Excavator Alternators
- Catalog ID
- 91000735
- 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
19 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 3E-7577
Which machines use 3E-7577?
Recorded compatible model references include Machine models 1: 11 / 11SU / 11U / 120H / 120H ES / 120H NA / 12H ES / 12H NA / 135H NA / 140H ES, Machine models 2: 140H NA / 143H / 14H NA / 160H ES / 160H NA / 163H NA / 16H NA / 345B / 345B II / 345B II MH, Machine models 3: 345B L / 350 L / 350-A / 350-A L / 3508 / 3512 / 3512B / 3512C / 3516 / 3516B, Machine models 4: 365B / 365B II / 365B L / 375-A / 375-A L / 385B / 5080 / 5090B / 572R II / 58, Machine models 5: 58L / 59L / 59N / 621E / 621F / 621G / 623E / 623F / 623G / 627E, Machine models 6: 627F / 627G / 631E / 631G / 633E II / 637E / 637G / 651E / 657E / 785, Machine models 7: 789 / 793 / 797 / 797B / 814F / 815F / 816F / 824G / 825G / 826G, Machine models 8: 834B / 836 / 9 / 938G / 938G II / 950F / 950G / 950G II / 950H / 962G and 11 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for 3E-7577?
No alternate number is listed for 3E-7577. Send the original nameplate for an alternate-number check.
How do I confirm 3E-7577 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.