Alternators

EexcavaStart A2TB0491 12V 90A Alternator for Infiniti G20 2.0L

Q: What numbers are documented for A2TB0491?

Primary Manufacturer Reference: A2TB0491. Cross-reference (fitment check required): 334-1332. Cross-reference (fitment check required): AMT0139. Cross-reference (fitment check required): 400-48143. Cross-reference (fitment check required): A2TB0491A. Cross-reference (fitment check required): A2TB3891. Cross-reference (fitment check required): 113439. Cross-reference (fitment check required): 13784. Cross-reference (fitment check required): A2TB4691. Cross-reference (fitment check required): 23100-4M610. Cross-reference (fitment check required): 23100-4M611. Cross-reference (fitment check required): 23100-5V410. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm A2TB0491 before ordering?

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

EexcavaStart packaging illustration · Not a photograph of this exact part. Exact-unit photo availability is not confirmed; send your original part number and unit photos with your inquiry.

OEM / referenceA2TB0491

Specification12V 90A Alternator; original-unit verification required

Catalog ID929290256

Product Type: Alternator
Product Brand: EexcavaStart
Primary Reference: A2TB0491
Equipment Scope: Infiniti G20; exact catalog-listed engine/year rows only
Voltage: 12 V
Rated Output: 90 A
Rotation: CW
Regulator: Internal
Pulley: 6 grooves; 60 mm outside diameter
Configuration Restriction: The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Availability: Quote only; stock not confirmed
Image Disclosure: Brand packaging illustration; exact-unit photograph not confirmed

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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 Manufacturer Reference	MITSUBISHI	A2TB0491
Cross-reference (fitment check required)	AC DELCO	334-1332
Cross-reference (fitment check required)	ARROWHEAD	AMT0139
Cross-reference (fitment check required)	ARROWHEAD	400-48143
Cross-reference (fitment check required)	ARROWHEAD	A2TB0491A
Cross-reference (fitment check required)	ARROWHEAD	A2TB3891
Cross-reference (fitment check required)	CARGO	113439
Cross-reference (fitment check required)	LESTER	13784
Cross-reference (fitment check required)	MITSUBISHI	A2TB4691
Cross-reference (fitment check required)	NISSAN	23100-4M610
Cross-reference (fitment check required)	NISSAN	23100-4M611
Cross-reference (fitment check required)	NISSAN	23100-5V410
Cross-reference (fitment check required)	NISSAN	23100-6J111
Cross-reference (fitment check required)	NISSAN	23100-6J112
Cross-reference (fitment check required)	NISSAN	23100-9F511
Cross-reference (fitment check required)	WAI	1-2442-01MI

Product fitment guide

Part numbers and compatible models

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

Part identification

Reference numbers

Primary number

A2TB0491

Cross-reference (fitment check required)

334-1332
AMT0139
400-48143
A2TB0491A
A2TB3891
113439
13784
A2TB4691
23100-4M610
23100-4M611
23100-5V410
23100-6J111
23100-6J112
23100-9F511
1-2442-01MI

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

12V 90A Alternator; original-unit verification required

Category: Alternators
Catalog ID: 929290256
Illustration 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

8 model references

Infiniti G20 1999 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 1999 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 2000 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 2000 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 2001 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 2001 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 2002 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.
Infiniti G20 2002 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.

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 A2TB0491

Which machines use A2TB0491?

Recorded compatible model references include Infiniti G20 1999 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 1999 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 2000 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 2000 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 2001 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 2001 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 2002 / 2.0L: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit., Infiniti G20 2002 / 2000cc 2.0L L4 SR20DE: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; The recorded pulley inner diameter is 15 mm; confirm shaft and pulley geometry on the original unit.. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for A2TB0491?

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 A2TB0491 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.