Alternators

A2TA2871 12V 50A Alternator for CAT GC15 GC18

Q: What numbers are documented for A2TA2871?

Primary Part Number: A2TA2871. Catalog Cross-Reference - Verify Configuration: 12311. Catalog Cross-Reference - Verify Configuration: 1-2153-01MI. Catalog Cross-Reference - Verify Configuration: 113310. Catalog Cross-Reference - Verify Configuration: 12311N. Catalog Cross-Reference - Verify Configuration: 12311R. Catalog Cross-Reference - Verify Configuration: 155.540.050. Catalog Cross-Reference - Verify Configuration: 155.540.050.130. Catalog Cross-Reference - Verify Configuration: 190-005. Catalog Cross-Reference - Verify Configuration: 203-447. Catalog Cross-Reference - Verify Configuration: 28-5798. Catalog Cross-Reference - Verify Configuration: 400-48011R. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm A2TA2871 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.

A2TA2871 12V 50A Alternator for CAT GC15 GC18, OEM/reference A2TA2871, Alternator, product view 1

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OEM / referenceA2TA2871

SpecificationAlternator

Catalog ID53634540

Product Type: Alternator
Product Brand: EexcavaStart
Technical Specification: 50 Amp/12 Volt,CW, 1-Groove Pulley
Design: IR/IF
Voltage: 12 V
Amperage: 50 A
Rotation: CW
Pulley Class: V1
Plug Clock: 01:00 Plug Clock
Plug Code: 300
Brushless: YES
Mounting Type: Two Mounting Feet/One Mounting Ear
Split Mtg Ear Thk Mm: 80
Polarity: B+
One Wire Capable: No
Cooling Method: Alternator cooling via internal fan
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	Product reference	A2TA2871
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	12311
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	1-2153-01MI
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	113310
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	12311N
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	12311R
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	155.540.050
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	155.540.050.130
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	190-005
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	203-447
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	28-5798
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	400-48011R
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	400-48065
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	50875
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	554007RI
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	572111502
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	90-27-3190
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	90-27-3190N
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	A-8775
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	A002TA2871
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	A002TA2871A
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	A2TA2871A
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	AC-00120R
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	AL10081X
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	AL5056X
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	ALT20307
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	ALT31102
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	AMT0199
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	CAL35319GS
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	DRA0868
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	F032113310
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	LRA03186
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	MD316418
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	MD354809
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	MD354809A
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	MD354809D
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	VA-12311
Cross-reference (fitment check required)	Confirm electrical, mounting and application configuration	X612311
Cross-reference (fitment check required)	ARROWHEAD	AMT0199
Cross-reference (fitment check required)	CARGO	113310
Cross-reference (fitment check required)	J&N Electrical Products	400-48011R
Cross-reference (fitment check required)	J&N Electrical Products	400-48065
Cross-reference (fitment check required)	LESTER	12311
Cross-reference (fitment check required)	MITSUBISHI	A2TA2871A
Cross-reference (fitment check required)	MITSUBISHI MOTORS	MD316418
Cross-reference (fitment check required)	MITSUBISHI MOTORS	MD354809
Cross-reference (fitment check required)	MITSUBISHI MOTORS	MD354809D
Cross-reference (fitment check required)	WAI	1-2153-01MI
Cross-reference (fitment check required)	WAI	12311N

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

A2TA2871

Cross-reference (fitment check required)

12311
1-2153-01MI
113310
12311N
12311R
155.540.050
155.540.050.130
190-005
203-447
28-5798
400-48011R
400-48065
50875
554007RI
572111502
90-27-3190
90-27-3190N
A-8775
A002TA2871
A002TA2871A
A2TA2871A
AC-00120R
AL10081X
AL5056X
ALT20307
ALT31102
AMT0199
CAL35319GS
DRA0868
F032113310
LRA03186
MD316418
MD354809
MD354809A
MD354809D
VA-12311
X612311

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: 53634540
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

19 model references

Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC15 · Year: 1992-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC18 · Year: 1992-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC20 · Year: 1992-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC25 · Year: 1992-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC25 · Year: 1992-1997 · Engine: Mitsubishi 4G64
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC30 · Year: 1992-1997 · Engine: Mitsubishi 4G64
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP15 · Year: 1994-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP18 · Year: 1992-1997 · Engine: Mitsubishi 4G15
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP20 · Year: 1992-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP25 · Year: 1992-1997 · Engine: Mitsubishi 4G63
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP25 · Year: 1992-1997 · Engine: Mitsubishi 4G64
Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP30 · Year: 1992-1997 · Engine: Mitsubishi 4G64
Recorded application: Make: Clark · Model: CGC20 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas
Recorded application: Make: Clark · Model: CGC25 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas
Recorded application: Make: Clark · Model: CGC30 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas
Recorded application: Make: Clark · Model: CGC32 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas
Recorded application: Make: Clark · Model: CGP20 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas
Recorded application: Make: Clark · Model: CGP25 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas
Recorded application: Make: Clark · Model: CGP30 · Year: 1995-2000 · Engine: Mitsubishi 4G64 Gas

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 A2TA2871

Which machines use A2TA2871?

Recorded compatible model references include Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC15 · Year: 1992-1997 · Engine: Mitsubishi 4G63, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC18 · Year: 1992-1997 · Engine: Mitsubishi 4G63, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC20 · Year: 1992-1997 · Engine: Mitsubishi 4G63, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC25 · Year: 1992-1997 · Engine: Mitsubishi 4G63, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC25 · Year: 1992-1997 · Engine: Mitsubishi 4G64, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GC30 · Year: 1992-1997 · Engine: Mitsubishi 4G64, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP15 · Year: 1994-1997 · Engine: Mitsubishi 4G63, Recorded application: Make: Caterpillar Ag. & Ind. · Model: GP18 · Year: 1992-1997 · Engine: Mitsubishi 4G15 and 11 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for A2TA2871?

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 A2TA2871 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.