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10 Best G37 Alternator of 2025

Tested and Reviewed: Top 10 G37 Alternator deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

HAYIAUTO

HAYIAUTO 11340 Car Alternators Fit for Nissan 350Z 370Z, for Infiniti M35 Q50 Q70 3.5L 3.7L Automotive Replacement Alternator 400-48164, 23100-JK01A, 23100JK01A

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Editor's bottom line:

“This g37 alternator is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

[Car Alternator Part Number]: 11340N, 11340, 90273384, 23100JK01A, 23100-JK01A, 90-27-3384, A003TJ1991, A003TJ1991A, A3TJ1991. Before placing an order for the automotive replacement alternators, please verify its fitment with your vehicle using the part number.
[New Alternator Specifications]: Amperage: 150A; Voltage: 12V; Rotation: CW(Clockwise); Number of Grooves: 7-Groove Pulley; Fan Type: Internal; Regulator Type: Internal. When your vehicle stalling engine, sudden dashboard warning lights or failing electrical systems, HAYIAUTO brand-new car alternators is a good choice for you to solve these problems. It offers a simple, reliable replacement for your original alternator.
[Vehicle Fitment]: 23100JK01A alternator replacement for Infiniti EX35 2008-2010 V6 3.5L (To 11/30/2009) Alternator | for Infiniti FX35 2009-2010 V6 3.5L (To 2/2010) Alternator | for Infiniti G35 2007-2008 V6 3.5L Alternator | for Infiniti G37 2008-2010 V6 3.7L (To 2/2010) Alternator | for Infiniti M35 2009-2010 V6 3.5L Alternator | for Infiniti M37 2011-2011 V6 3.7L Alternator | for Infiniti Q50 2014-2015 V6 3.7L Alternator | for Infiniti Q70 2014-2019 V6 3.7L (From 11/20/2013, Sport Package) Alternator | for Infiniti Q70L 2016-2019 V6 3.7L (Sport Package) Alternator.
[Vehicle Fitment]: 23100JK01A alternator replacement for Nissan 350Z 2007-2009 V6 3.5L Alternator | for Nissan 370Z 2009-2010 V6 3.7L (To 2/2010). [Important Notice]: Before purchasing HAYIAUTO new alternator, please verify the part number, OEM alternator pictures, specifications, vehicle make, model, and engine type to ensure this is the correct alternator for your car.
[High-Performance Alternator Replacement]: The robust and precision CNC machined design to reduce friction, vibration and noise, reducing the need for frequent replacements. Rotors and stators are calibrated and then sealed with secondary insulating coating to help prevent shorts.This alternator is thoroughly tested to meet or exceed OEM specifications, ensuring the alternator operates smoothly under demanding conditions.
[Reliable Quality Assurance]: Every HAYIAUTO Store alternator is thoroughly tested to ensure it meets the highest standards of performance & reliability. Before leaving the factory, it is subjected to rigorous testing, including "load tests, voltage regulation, cycling tests, and heat resistance tests", to ensure that it will produce a longer life in high heat environments. This thorough quality control process ensures that each alternator performs at its peak right out of the box. With the HAYIAUTO automotive replacement alternators, you can rest assured that it will deliver reliable service throughout its lifespan, minimizing the risk of premature failure.

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Picked by 397 people today

9.5

SCITOO

SCITOO Alternator Fits for Nissan 350Z 07-09, 370Z 09-16, for Infiniti M35 09-10,for Q50 Q60 14-15,for Q70 QX50 QX70 14-16,for G37 08-13, V6 3.5L 3.7L, 150A High-output CW 7-Groove 11340 A003TJ1991

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Main Highlights

Alternator Fitment- Automotive replacement for Infiniti for EX35 V6 3.5L 2008-2012,for Infiniti for FX35 V6 3.5L 2009-2011,for Infiniti for G37 V6 3.7L 2008-2013,for Infiniti for M35 V6 3.5L 2009-2010,for Infiniti for M37 V6 3.7L 2011-2013,for Infiniti for Q40 V6 3.7L 2015 ,for Infiniti for Q50 for Q60 V6 3.7L 2014-2015,for Infiniti for Q70 for QX50 for QX70 V6 3.7L 2014-2016,for Infiniti for Q70L V6 3.7L 2015-2016,for Nissan for 350Z V6 3.5L 2007-2009,for Nissan for 370Z V6 3.7L 2009-2016
High-Performance Specifications Engineered with Voltage: 12V; Amperage: 150Amp; Rotation: CW (Clockwise); Regulator: IR (Internal Regulator) ; Fan: IF (Internal Fan); Grooves: 7-Groove Clutch Pulley; Condition: New, high output alternator is compact and lightweight, fully compatible with the electronic system of your vehicle, this automotive replacement alternator delivers reliable power for your car, its built to meet the demands of modern vehicles
Car Alternator Reference Number- Direct OEM replacement for your malfunctioning part, OE number : A003TJ1991 A003TJ1991A 11340 11340N 90273384 23100JK01A 23100-JK01A 90-27-3384 A3TJ1991
Premium Alternators - New alternators throught precision CNC machined castings, Bearing 100% tested to OE standards. All key mounting points are measured for proper fit. Throught igorous and accelerated cycling tests to ensure the quality and durability of productInstalling this alternator is a breeze! Simply disconnect the batterys negative terminal, adjust the transmission belt to the correct tension (too loose = power loss; too tight = bearing damage), and tighten all screws securely
Why Choose SCITOO As a trusted name in automotive replacement parts, SCITOO delivers high-output alternators that combine performance, durability, and affordability. Whether youre driving a sedan, SUV, or truck, our alternator is your go-to solution for reliable power; for any issues, our team provides professional technical support.

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9.5

OCPTY

OCPTY Alternators Alternator 11340 2008-2012 for Infiniti for EX35,2013 for Infiniti for EX37,2009-2011 for Infiniti for FX35,2013 for Infiniti for FX37,2008-2013 for Infiniti for G37

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Main Highlights

ITEM FITMENT : for Infiniti for EX35 2008-2012,for Infiniti for EX37 2013 ,for Infiniti for FX35 2009-2011,for Infiniti for FX37 2013 ,for Infiniti for G37 2008-2013,for Infiniti for M35 2009-2010,for Infiniti for M37 2011-2013,for Infiniti for Q40 2015 ,for Infiniti for Q50 2014-2015,for Infiniti for Q60 2014-2015,for Infiniti for Q70 2014-2016,for Infiniti for Q70L
OEM PART MUNBER : 11340 A003TJ1991 A003TJ1991A 11340 11340N, 11340, 90273384, 23100JK01A, 23100-JK01A, 90-27-3384, A003TJ1991, A003TJ1991A, A3TJ1991 A003TJ1991 A003TJ1991A 11340 11340N, 11340, 90273384, 23100JK01A, 23100-JK01A, 90-27-3384, A003TJ1991, A003TJ1991A, A3TJ1991 11340 A003TJ1991, A003TJ1991A, 11340 A003TJ1991 A003TJ1991A 11340
Alternator Specifications:Voltage : 12, Alternator Charge Current : 150, Manufacturer Restriction : for Mitsubishi , Number of Ribs : 7, Belt Pulley mm::55, Rotation Direction : Clockwise rotation IR/IF 7-Groove Clutch Pulley
FUNCTION :An alternator is a mechanical device that converts other forms of energy into electrical energy.OCPTY makes alternators that work better in the high - heat environments of engines
Non-Infringement Disclaimer for Auto Parts Sales:Please note that all references to brand names and models are for compatibility purposes only and do not imply any affiliation or endorsement by the original manufacturer

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9.2

PHILTOP

PHILTOP 11340N High Output Alternator 150A 12V Fit for INFINITI,Nissan G35, G37, 350Z, 370-z, FX35, M35, EX35, M37, Q50, Q70, Q70L

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Main Highlights

Reference Number: 11340N,11340,11340N,231003FY1A,23100JK01A,90273384,A003TJ1991,A3TJ1991,A3TJ1991A,A3TJ1991B,MPA11340
Compatible for: The alternator is perfect for2014-2015 Q50 3.7L, 2008-2010 G37, 2007-2008 G35, 2008-2010 EX35, 2007-2009 350Z, 2009-2010 370, 2009-2010 FX35, 2011 M37, 2014 2016-2019 Q70 3.7L, 2009-2010 M35, 2016-2019 Q70L 3.7L
Parameter:Amp:150, Volt:12, Groove Pulley:S7, ROTATION:CW, Design:IR/IF, PLUG CLOCK:10
Premium Alternators: Rigorously tested to OE standards with 2000H endurance, 96H salt spray resistance, extreme temperatures from -40°C to 105°C, and harsh vibration impacts. Built for unparalleled reliability, ensuring your Safety and stable power in any condition
Ensure Safety New alternator engineered to eliminate persistent vehicle issues. By delivering robust, stable, and protected electrical output, it ensures your vehicle's electrical system operates at its peak, eliminating the worry and risk of roadside breakdowns

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9.0

KAC

KAC Alternator fits for 2007-2008 G35, for 2008-2010 G37, for 2009-2010 M35, for 2011 M37, for 2014-2015 Q50, for 2014-2016 Q70,150 Amp for 11340N 12V,CW,S7 Groove Pulley

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Main Highlights

Vehicle Fitment : The High Output Alternator fit for 2007-2008 G35, For 2008-2010 G37, For 2009-2010 M35, For 2011 M37, For 2014-2015 Q50, For 2014-2016 Q70, For 2008-2010 EX35, For 2009-2010 FX35, For 2007-2009 350Z, For 2009-2010 370Z
OE Reference Number: 11340,11340N,231003FY1A,23100JK01A,90273384,A003TJ1991,A3TJ1991,A3TJ1991A,A3TJ1991B,MPA11340
Automotive alternator specifications: Amperage Rating -150Amp,Voltage -12 Volt,Groove Pulley-CW,Rotation-S7,Specs For-Mitsubishi IR/IF,Design-IR/IF,Plug Clock-10
High performance: Alternator's High Quality bearings with high temperature lubricants and double lip rubber seals reduce friction, vibration and noise. The Alternator will keep your Vehicle powered, even under demanding conditions
Super Quality: Our Alternator's rotor and stator are crafted using high-Quality magnetic materials and 100% pure copper windings. They possess excellent conductivity and magnetic properties, ensuring efficient energy conversion and long-lasting durability

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8.8

Farrme

Farrme 11340 Car Alternators Fit for Nissan 350Z 07-09, 370Z 09-10, for Infiniti EX35 FX35 G35 G37 M35 M37 Q50 Q70 Q70L V6 3.5L 3.7L Automotive Replacement Alternators 150A 23100JK01A, 23100-JK01A

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Main Highlights

Automotive Replacement Alternators Part Number11340N, 11340, 90273384, 23100JK01A, 23100-JK01A, 90-27-3384, A003TJ1991, A003TJ1991A, A3TJ1991.High-Performance Specifications Amperage: 150A; Voltage: 12V; Rotation: CW(Clockwise); Number of Grooves: 7-Groove Pulley; Fan Type: Internal; Regulator Type: Internal; Condition: New. Farrme 11340 alternator ensures exact fit, form, and function, adhering to OEM standards for reliability and performance, and is a direct replacement for your original part.
Alternator Compatibility11340 alternators replacement for Infiniti Models: 2008-2010 EX35 V6 3.5L To 11/30/2009 | 2009-2010 FX35 V6 3.5L To 2/2010 | 2007-2008 G35 V6 3.5L | 2008-2010 G37 V6 3.7L To 2/2010 | 2009-2010 M35 V6 3.5L | 2011-2011 M37 V6 3.7L | 2014-2015 Q50 V6 3.7L | 2014-2019 Q70 V6 3.7L From 11/20/2013, Sport Pkg | 2016-2019 Q70L V6 3.7L Sport Pkg.
Alternator Compatibility11340 alternators replacement for Nissan Models: 2007-2009 350Z V6 3.5L | 2009-2010 370Z V6 3.7L To 2/2010.NoteBefore purchasing a new alternator 11340N, please verify the part number, OEM alternator pictures, specifications, vehicle make, model, and engine type to ensure this is the correct alternator for your car. If you are unsure whether this alternator suits your car model, you can click "AMAZONCONFIRMEDFIT" above the listing or contact-us.
Durable ConstructionFarrme Auto Parts Alternator is constructed using premium materials, including precision CNC machining castings, Die-cast aluminum alternator, Pure copper winding, external insulating coating to ensure exceptional resistance to heat, vibration, and corrosion. Whether you're driving through rough terrains or facing extreme temperatures, this 1OO% NEW Alternator provides consistent and strong power output. All finished car alternators are fully tested to O.E.M. specifications and standards for performance and fit.
OEM StandardsFarrme Car Alternator 23100JK01A adheres to OEM standards and is a mechanical device that transforms various forms of energy into electrical energy. It utilizes advanced technologies to optimize energy conversion and minimize power loss, leading to enhanced fuel efficiency and prolonged battery life. High-output alternator translates to longer drives without the need for frequent recharging or excessive fuel consumption, ensuring the smooth operation of your vehicle's electrical components.
NoteFarrme alternators are brand-new and undergo 1OO% testing. If you receive an alternator that is not working or charging, Reasons: Improper installation can lead to malfunctioning or ineffective charging. Loose or damaged wires between the alternator and the bat-tery can disrupt the charging process. If the belt is too loose or worn out, it may result in insufficient power generation. A weak or defective bat-tery can prevent the alternator from charging properly. RemindMake sure you plugged in the alternator regulator plug correctly its easy to forget to do. Verify wiring on the alternator is correct and tight. It is easy to forget to reconnect a small wire sometimes.
IMPORTANT NOTICE BEFORE INSTALLATIONPlease verify vehicle make, model, year, engine, and OEM part number before installation. Contact-us with your VIN if unsure. Have a qualified technician check the electrical system (bat-tery cables, fuses, voltage regulator) for shorts, corrosion, or loose connections before installation. Professional installation is strongly recommended. Improper setup may cause failure or damage. The appearance of the alternator may differ from your original part. However, these are often interchangeable and fully compatible in terms of function and fitment. If in doubt, send-us a photo to confirm.

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8.6

DriveFix

DriveFix 150A Alternator for Nissan 350Z 370Z Infiniti EX35 FX35 G35 G37 M35 M37 Q70 Q70L QX50 QX70 2010-2020

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Main Highlights

For Nissan 350Z 2007-2009, 370Z 2009-2020
For Infiniti EX35 2008-2012, EX37/FX37 2013, FX35 2009-2012, G35 2007-2008, G37 2008-2013, M35 2009-2010, M37 2011-2013, Q40 2015, Q50/Q60 2014-2015, Q70 2014-2019, Q70L 2015-2019, QX50/QX70 2014-2017

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8.3

PHILTOP

PHILTOP Alternator Compatible with INFINITI and Nissan 2007-2008 G35, for 2008-2010 G37, for 2009-2010 M35, for 2011 M37, for 2014-2015 Q50, for 2014-2016 Q70,11340N,150Amp,CW,S7

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Main Highlights

Vehicle Fitment: Alternator compatible with 2007-2008 G35, For 2008-2010 G37, For 2009-2010 M35, For 2011 M37, For 2014-2015 Q50, For 2014-2016 Q70, For 2008-2010 EX35, For 2009-2010 FX35, For 2007-2009 350Z, For 2009-2010 370Z
Replace Reference Number:11340N,11340N, 1329501MI, 11340R, M900600, 11340, A003TJ1991, MD194470, A3TJ1991, 23100JK01A
High-Performance Alternators: Amperage Rating: 150Amp;Voltage: 12V;Rotation Direction: CW;Regulator/Fan Type:IR/IF;Pulley Groove: S7;Number of Grooves: S7;Plug Clock: 10 o'clock
Premium Alternators: Rigorously tested to OE standards with 2000H endurance, 96H salt spray resistance, extreme temperatures from -40°C to 105°C, and harsh vibration impacts. Built for unparalleled reliability, ensuring your Safety and stable power in any condition
Ensure Safety: New Alternator engineered to eliminate persistent vehicle issues. By delivering robust, stable, and protected electrical output, it ensures your vehicle's electrical system operates at its peak, eliminating the worry and risk of roadside breakdowns

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8.1

GDSMOTU

GDSMOTU Alternator Compatible for INFINITI for FX37 3.7L 2013 for INFINITI for EX37 3.7L 2013 for INFINITI for FX35 3.5L 2009-2011 for INFINITI for EX35 3.5L 2008-2012,A003TJ1991A A003TJ1991

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Main Highlights

[Vehicle Fitment] ---- Alternator fit for INFINITI for FX37 3.7L 2013; for INFINITI for EX37 3.7L 2013; for INFINITI for M35 3.5L 2009-2010; for INFINITI for Q40 3.7L 2015; for INFINITI for M37 3.7L 2011-2013; for INFINITI for G37 3.7L 2008-2013; for INFINITI for FX35 3.5L 2009-2011; for INFINITI for EX35 3.5L 2008-2012
[Relevant Features] ---- Amperage: 150Amp; Voltage: 12; Rotation: CW; Pulley Class: 7-Groove Decoupler Pulley;Belt Pulley [mm]: 55; Regulator: IR; Fan Type: IF
[Replacement Part Numbers] ---- A003TJ1991, A003TJ1991A, 11340
[Premium Car Alternator] ---- Made by precision CNC machining castings, die-cast aluminum alternator, pure copper winding, external insulating coating to prevent short circuit, stable and strong power for vehicle, If there is excess power, the power storage system will be fully utilized
[Packaging & Guide] ---- Packaging: 1Pc alternator. Please enter vehicle type + year + make + model + trim + body style + engine on top of amazon confirmed fit

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8.1

Woosphy

Woosphy Alternator Replacement for Infiniti G35 G37 M35 M37 Q50 Q70 EX35 FX35 350Z 370Z V6 3.5L 3.7L 2007-2016 23100-JK01A A003TJ1991

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Main Highlights

OE Number: 23100-JK01A, A003TJ1991, A003TJ1991A, 11340, 11340N, M900600, MD194470
Replacement for Infiniti G35 V6 3.5L 2007-2008, G37 V6 3.7L 2008-2010
Replacement for Infiniti M35 V6 3.5L 2009-2010, M37 V6 3.7L 2011
Replacement for Infiniti Q50 V6 3.7L 2014-2015, Q70 V6 3.7L 2014-2016, EX35 V6 3.5L 2008-2010, FX35 V6 3.5L 2009-2010
Replacement for Nissan 350Z V6 3.5L 2007-2009, 370Z V6 3.7L 2009-2010

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Our Best Overall Choice

Best Choice

9.7

HAYIAUTO

HAYIAUTO 11340 Car Alternators Fit for Nissan 350Z 370Z, for Infiniti M35 Q50 Q70 3.5L 3.7L Automotive Replacement Alternator 400-48164, 23100-JK01A, 23100JK01A

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

[Car Alternator Part Number]: 11340N, 11340, 90273384, 23100JK01A, 23100-JK01A, 90-27-3384, A003TJ1991, A003TJ1991A, A3TJ1991. Before placing an order for the automotive replacement alternators, please verify its fitment with your vehicle using the part number.
[New Alternator Specifications]: Amperage: 150A; Voltage: 12V; Rotation: CW(Clockwise); Number of Grooves: 7-Groove Pulley; Fan Type: Internal; Regulator Type: Internal. When your vehicle stalling engine, sudden dashboard warning lights or failing electrical systems, HAYIAUTO brand-new car alternators is a good choice for you to solve these problems. It offers a simple, reliable replacement for your original alternator.
[Vehicle Fitment]: 23100JK01A alternator replacement for Infiniti EX35 2008-2010 V6 3.5L (To 11/30/2009) Alternator | for Infiniti FX35 2009-2010 V6 3.5L (To 2/2010) Alternator | for Infiniti G35 2007-2008 V6 3.5L Alternator | for Infiniti G37 2008-2010 V6 3.7L (To 2/2010) Alternator | for Infiniti M35 2009-2010 V6 3.5L Alternator | for Infiniti M37 2011-2011 V6 3.7L Alternator | for Infiniti Q50 2014-2015 V6 3.7L Alternator | for Infiniti Q70 2014-2019 V6 3.7L (From 11/20/2013, Sport Package) Alternator | for Infiniti Q70L 2016-2019 V6 3.7L (Sport Package) Alternator.
[Vehicle Fitment]: 23100JK01A alternator replacement for Nissan 350Z 2007-2009 V6 3.5L Alternator | for Nissan 370Z 2009-2010 V6 3.7L (To 2/2010). [Important Notice]: Before purchasing HAYIAUTO new alternator, please verify the part number, OEM alternator pictures, specifications, vehicle make, model, and engine type to ensure this is the correct alternator for your car.
[High-Performance Alternator Replacement]: The robust and precision CNC machined design to reduce friction, vibration and noise, reducing the need for frequent replacements. Rotors and stators are calibrated and then sealed with secondary insulating coating to help prevent shorts.This alternator is thoroughly tested to meet or exceed OEM specifications, ensuring the alternator operates smoothly under demanding conditions.
[Reliable Quality Assurance]: Every HAYIAUTO Store alternator is thoroughly tested to ensure it meets the highest standards of performance & reliability. Before leaving the factory, it is subjected to rigorous testing, including "load tests, voltage regulation, cycling tests, and heat resistance tests", to ensure that it will produce a longer life in high heat environments. This thorough quality control process ensures that each alternator performs at its peak right out of the box. With the HAYIAUTO automotive replacement alternators, you can rest assured that it will deliver reliable service throughout its lifespan, minimizing the risk of premature failure.

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