Excavator Alternators

2871A903 24V 100A Alternator for Barber Greene BG8820 BG8820B

Q: What numbers are documented for 2871A903?

Primary Part Number: 2871A903. Source Catalog Number: 20621N. Catalog Cross-Reference - Verify Configuration: 0005011080. Catalog Cross-Reference - Verify Configuration: 05011080. Catalog Cross-Reference - Verify Configuration: 0532342. Catalog Cross-Reference - Verify Configuration: 10443988. Catalog Cross-Reference - Verify Configuration: 11.203.102. Catalog Cross-Reference - Verify Configuration: 11.203.361. Catalog Cross-Reference - Verify Configuration: 11.203.502. Catalog Cross-Reference - Verify Configuration: 11.203.522. Catalog Cross-Reference - Verify Configuration: 11.203.694. Catalog Cross-Reference - Verify Configuration: 11.203.702. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 2871A903 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.

1 product photo · Swipe on mobile, or hover and select a thumbnail.

OEM / reference2871A903

SpecificationAlternator

Catalog ID50559798

Alternator identified by primary reference 2871A903. The exact structured catalog specifies 100 Amp/24 Volt, CW, w/o Pulley and records 13 application references. The contradictory recovered specification has been removed. Confirm the complete number, mounting or connector arrangement, and machine serial range before ordering.

Product Type: Alternator
Product Brand: EexcavaStart
Technical Specification: 100 Amp/24 Volt, CW, w/o Pulley
Design: IR/IF
Voltage: 24
Rated Output: 100
Rotation: CW
Pulley: w/o Pulley
Condition: New replacement part

Send email inquiry Ask on WhatsApp Return to catalog

Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Exact catalog identity	2871A903
Source Catalog Number	Exact technical catalog record	20621N
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	0005011080
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	05011080
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	0532342
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	10443988
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.203.102
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.203.361
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.203.502
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.203.522
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.203.694
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.203.702
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.204.166
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.204.244
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.204.255
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.204.258
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	11.204.337
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	112567
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	114767
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	173-55201
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	20621
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	20R-4763
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	21827
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	21827N
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	220 56 60/0
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	2205660
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	282-30118
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	282-558
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	282-590
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	283701072
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	2871A901
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	2871A902
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	378-9640
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	400-29038
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	553666RI
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	553666RIM
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	566.502.080.090
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	566.502.100
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	566.502.100.090
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	566.502.100.098
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	566.502.100.311
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	566.502.100.312
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	706.502.100
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	A-6643
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	A9214
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	A9214(LETRIKA)
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	AAK5325
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	AAK5554
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	AAN5124
Catalog Cross-Reference - Verify Configuration	Exact catalog record; configuration check required	AAN5325

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

2871A903

Other documented relationship

20621N
0005011080
05011080
0532342
10443988
11.203.102
11.203.361
11.203.502
11.203.522
11.203.694
11.203.702
11.204.166
11.204.244
11.204.255
11.204.258
11.204.337
112567
114767
173-55201
20621
20R-4763
21827
21827N
220 56 60/0
2205660
282-30118
282-558
282-590
283701072
2871A901
2871A902
378-9640
400-29038
553666RI
553666RIM
566.502.080.090
566.502.100
566.502.100.090
566.502.100.098
566.502.100.311
566.502.100.312
706.502.100
A-6643
A9214
A9214(LETRIKA)
AAK5325
AAK5554
AAN5124
AAN5325

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: 50559798
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

13 model references

Exact catalog application: Make: Barber Greene · Model: BG8820 · Year: 2008-2011 · Engine: L6 7.2L 439cid Deutz
Exact catalog application: Make: Barber Greene · Model: BG8820B · Year: 2009-2014 · Engine: L6 6.7L 410cid Volvo
Exact catalog application: Make: Caterpillar · Model: CS66B · Year: 2012 · Engine: L4 4.4L 269cid Caterpillar C4.4
Exact catalog application: Make: Caterpillar · Model: CS76B · Year: 2012 · Engine: L4 4.4L 269cid Caterpillar C4.4
Exact catalog application: Make: Caterpillar · Model: CS78B · Year: 2012-2019 · Engine: L6 6.6L 403cid Caterpillar C6.6
Exact catalog application: Make: Caterpillar · Model: CS78B · Year: 2012 · Engine: L4 4.4L 269cid Caterpillar C4.4
Exact catalog application: Make: Caterpillar · Model: CW34 · Year: 2012-2014 · Engine: L6 6.6L 403cid Caterpillar C6.6
Exact catalog application: Make: Volvo · Model: ABG8820 · Year: 2008-2011 · Engine: L6 7.2L 439cid Deutz
Exact catalog application: Make: Volvo · Model: ABG8820B · Year: 2009-2014 · Engine: L6 6.7L 410cid Volvo
Exact catalog application: Make: Volvo · Model: L45F · Year: 2010-2012 · Engine: L4 4.8L 290cid Volvo
Exact catalog application: Make: Volvo · Model: L50F · Year: 2010-2012 · Engine: L4 4.8L 290cid Volvo
Exact catalog application: Make: Volvo · Model: P8720B · Year: 2017-2019 · Engine: L6 7.1L Volvo
Exact catalog application: Make: Volvo · Model: SD110B · Year: 2009-2014 · Engine: L5 2.4L 147cid Volvo

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 2871A903

Which machines use 2871A903?

Recorded compatible model references include Exact catalog application: Make: Barber Greene · Model: BG8820 · Year: 2008-2011 · Engine: L6 7.2L 439cid Deutz, Exact catalog application: Make: Barber Greene · Model: BG8820B · Year: 2009-2014 · Engine: L6 6.7L 410cid Volvo, Exact catalog application: Make: Caterpillar · Model: CS66B · Year: 2012 · Engine: L4 4.4L 269cid Caterpillar C4.4, Exact catalog application: Make: Caterpillar · Model: CS76B · Year: 2012 · Engine: L4 4.4L 269cid Caterpillar C4.4, Exact catalog application: Make: Caterpillar · Model: CS78B · Year: 2012-2019 · Engine: L6 6.6L 403cid Caterpillar C6.6, Exact catalog application: Make: Caterpillar · Model: CS78B · Year: 2012 · Engine: L4 4.4L 269cid Caterpillar C4.4, Exact catalog application: Make: Caterpillar · Model: CW34 · Year: 2012-2014 · Engine: L6 6.6L 403cid Caterpillar C6.6, Exact catalog application: Make: Volvo · Model: ABG8820 · Year: 2008-2011 · Engine: L6 7.2L 439cid Deutz and 5 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 2871A903?

No alternate number is listed for 2871A903. Send the original nameplate for an alternate-number check.

How do I confirm 2871A903 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.

Continue comparing verified references from the same system.

Browse this category