2013-2018 Nissan Altima 2.5L Alternator

The Nissan Altima Alternator 23100-3TA1B is a replacement charging-system unit for compatible 2013–2018 Nissan Altima models equipped with the 2.5L QR25DE four-cylinder petrol engine. Common replacement specifications for this alternator configuration include 12V output, 110A rated current, clockwise rotation, an internal fan, internal regulator, and a 6-groove clutch/serpentine pulley. These electrical and pulley specifications are documented by established replacement-alternator manufacturers cross-referencing Nissan OEM number 23100-3TA1B.

Important Fitment Correction: Not for 2019 Altima

The supplied title describes this alternator as fitting 2013–2019 models, but 23100-3TA1B should not be marketed as a 2019 Nissan Altima alternator.

Nissan-compatible OEM catalog data lists 23100-3TA1B for 2013–2018 Altima vehicles with the QR25DE 2.5L engine. The redesigned 2019 Altima uses different engines and different alternators. For the 2019 Altima 2.5L PR25DD engine, Nissan catalogs 23100-6CA0A, while the 2.0L turbo KR20DDET uses 23100-6CB0A.

For accurate SEO and buyer fitment, the recommended product year range is therefore 2013–2018, with an additional production-date check required on some 2018 cars.

OEM Reference 23100-3TA1B

The primary reference for the Nissan Altima Alternator 23100-3TA1B is:

• Nissan OEM number: 23100-3TA1B
• Description: Alternator Assembly / Generator
• Engine: QR25DE
• Displacement: 2.5L
• Cylinders: Inline 4-cylinder
• Electrical system: 12V
• Replacement specification: 110A
• Rotation: Clockwise / CW
• Pulley: 6-groove clutch/serpentine type
• Fan: Internal
• Regulator: Internal

NissanPartsDeal identifies 23100-3TA1B as an Alternator Assembly/Generator for 2013–2018 Altima 2.5L QR25DE applications. It also identifies Nissan’s remanufactured replacement reference as 2310M-3TA1BRW.

The 110A, 12V and six-groove specifications should be confirmed against the actual alternator being supplied before they are represented as guaranteed specifications.

2013-2018 Nissan Altima 2.5L Fitment

The Nissan Altima Alternator 23100-3TA1B is documented for compatible QR25DE-powered Altima applications across:

• 2013 Nissan Altima 2.5L
• 2014 Nissan Altima 2.5L
• 2015 Nissan Altima 2.5L
• 2016 Nissan Altima 2.5L
• 2017 Nissan Altima 2.5L
• Selected 2018 Nissan Altima 2.5L production

Applicable trim descriptions can include selected:

• Base
• S
• SV
• SR
• SL
• Technology-equipped variants
• Other regional 2.5L configurations

OEM catalog data for 2013, 2014, 2015 and later Altimas consistently identifies 23100-3TA1B with the QR25DE four-cylinder engine, while the 3.5L VQ35DE uses a different alternator family.

Important 2018 Production-Date Split

Buyers with a 2018 model should pay particular attention to the production date.

Nissan’s official parts catalog identifies its corresponding remanufactured 2.5L alternator 2310M-3TA1BRW for vehicles produced to approximately September 2017. For later 2018 production, Nissan lists a different alternator family, including 23100-9HU0A / 2310M-9HU0ARW.

Therefore, the Nissan Altima Alternator 23100-3TA1B should not automatically be supplied to every vehicle registered as a 2018 Altima.

For 2018 vehicles, verify:

• VIN
• Production date
• Original alternator label
• OEM reference

before confirming compatibility.

2.5L QR25DE Engine Only

This alternator configuration is associated with the 2.5L QR25DE engine.

It should not be confused with the alternator used on 3.5L V6 Altimas.

For example, the 2013 Nissan Altima catalog separately identifies:

23100-3TA1B – QR25DE 2.5L

and

23100-JA11B – VQ35DE 3.5L

showing that the four-cylinder and six-cylinder vehicles require different charging-system components.

The Nissan Altima Alternator 23100-3TA1B should therefore be marketed specifically around the QR25DE engine rather than simply as a universal Altima alternator.

12V 110A Charging Output

Replacement manufacturers cross-referencing 23100-3TA1B specify:

Voltage: 12V
Rated amperage: 110A

The alternator converts mechanical energy from the engine’s accessory drive into electrical power used by the vehicle.

While the engine is operating, it supports systems including:

• Battery charging
• Exterior lighting
• Interior electronics
• Engine-management electronics
• Climate-control electrical systems
• Audio and infotainment equipment
• Safety and control modules

The Nissan Altima Alternator 23100-3TA1B should match the required vehicle electrical specification rather than being selected only by physical appearance.

6-Groove Clutch Pulley

Cross-reference specifications identify this alternator configuration with a six-groove pulley.

Replacement-unit manufacturers describe it as an SC6 / 6-groove clutch pulley, with clockwise rotation.

Before ordering, buyers should compare the replacement unit with the existing alternator for:

• Number of pulley grooves
• Pulley design
• Diameter
• Mounting configuration
• Electrical connector position
• Main charging-terminal position

The Nissan Altima Alternator 23100-3TA1B should not be installed solely because another alternator has six pulley grooves.

Clockwise Rotation

The replacement configuration is commonly specified as:

Rotation: Clockwise / CW

This describes alternator rotation in its intended installation.

A replacement manufacturer listing for the 23100-3TA1B application specifies 12V, 110A, clockwise rotation and a six-groove clutch pulley for 2013–2018 Altima 2.5L vehicles.

Exact specifications of the physical product should still be inspected when sourcing from different manufacturers.  2013-2018 Nissan Altima 2.5L Alternator

Nissan and Mitsubishi Cross References

The Nissan Altima Alternator 23100-3TA1B is associated with several common replacement and manufacturer references.

These can include:

• 23100-3TA1A
• 23100-3TA1B
• 23100-3TA1BRE
• 2310M-3TA1BRW
• A002TJ1881
• A002TJ1881ZC
• A002TJ1891
• A2TJ1891
• A2TJ1891ZC
• 11657

A professional alternator manufacturer lists these references together for the 2013–2018 Altima 2.5L application.  2013-2018 Nissan Altima 2.5L Alternator

Cross references are useful for identification but should not replace VIN and physical-unit verification.

Symptoms of a Failing Alternator

A vehicle may require alternator inspection if it develops symptoms such as:

• Battery warning light
• Repeated battery discharge
• Difficulty starting
• Dim or fluctuating headlights
• Electrical accessories operating inconsistently
• Charging-system warning messages
• Abnormal alternator bearing or pulley noise  2013-2018 Nissan Altima 2.5L Alternator

These symptoms do not prove that the alternator itself has failed. Battery condition, drive belt, wiring, terminals and charging-system connections should also be tested.

The Nissan Altima Alternator 23100-3TA1B should be replaced after appropriate charging-system diagnosis.  2013-2018 Nissan Altima 2.5L Alternator

Alternator vs Complete Installation Kit

The alternator should not automatically be described as including every component required for installation.

Depending on the actual product, items such as the following may be separate:

• Mounting bolts
• Drive belt
• Wiring
• Battery cable
• Tensioner
• Brackets
• Additional electrical connectors  2013-2018 Nissan Altima 2.5L Alternator

Nissan’s alternator diagrams list related mounting hardware separately from the generator itself.

Package contents should therefore be stated clearly in the quotation.

New, Remanufactured or Used Units

The Nissan Altima Alternator 23100-3TA1B may be available in different supply conditions.

These can include:

• New genuine OEM
• Nissan remanufactured
• New aftermarket replacement
• Used original equipment  2013-2018 Nissan Altima 2.5L Alternator

The Nissan OEM number itself should not be used to claim that an aftermarket product is “genuine Nissan.”

If a new aftermarket alternator merely cross-references 23100-3TA1B, describe it as a replacement compatible with OEM reference 23100-3TA1B.

Professional Installation

Professional installation is recommended.

A technician should confirm:

• Battery condition
• Drive-belt condition
• Pulley alignment
• Electrical connections
• Alternator mounting
• Charging voltage after installation
• Charging current where appropriate  2013-2018 Nissan Altima 2.5L Alternator

The vehicle’s charging system should be tested after the Nissan Altima Alternator 23100-3TA1B is installed.  2013-2018 Nissan Altima 2.5L Alternator

Information Required Before Ordering

For accurate fitment, provide:

• Nissan Altima model year
• VIN
• 2.5L QR25DE confirmation
• Vehicle production date, especially for 2018
• Original alternator number
• Pulley configuration
• Required quantity
• Delivery destination  2013-2018 Nissan Altima 2.5L Alternator

Request a Quote  2013-2018 Nissan Altima 2.5L Alternator

For pricing and availability of the Nissan Altima Alternator 23100-3TA1B, provide the vehicle year, VIN, engine type, original alternator reference, production date where applicable, quantity and shipping destination.  2013-2018 Nissan Altima 2.5L Alternator

Exact brand, OEM or aftermarket status, amperage, pulley configuration, condition, packaging, MOQ, availability and delivery terms should be confirmed for the actual alternator being supplied.  2013-2018 Nissan Altima 2.5L Alternator