1990 Jeep Wrangler Alternator Parts

Keep Your 1990 Jeep Wrangler in Top Shape with Quality Alternator Parts

Whether you’re repairing or upgrading your Alternator Part, using high-quality parts is key to keeping your 1990 Jeep Wrangler looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Alternator Miscellaneous Parts, Alternators, and Alternator Rectifiers. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Explore Related Parts

While you’re upgrading or replacing your Alternator Part, don’t forget to check out other key components like Ignition Lock Parts and Starter Parts. At Advance Auto Parts, we’re here to help you keep your 1990 Jeep Wrangler in peak condition, inside and out.

Essential 1990 Jeep Wrangler Alternator Parts

National – Multi-Purpose Bearing (Part No.203-F)

Multi-Purpose Bearing

from

$18.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Carquest Premium – Alternator: Remanufactured, 220 Amps, Limited Lifetime Warranty (Part No.10413A)

Alternator: Remanufactured, 220 Amps, Limited Lifetime Warranty

from

$768.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


    Product Features:
    • Designed to meet or exceed OE specifications for fit, form and function
    • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 100% new OE-quality brushes and bearings are used to ensure long service life
    • Rotors and stators are load tested and double insulated for maximum charging performance
    • Slip rings are precision polished for maximum brush contact and service life
    • Application-specific technical bulletins included where applicable
    • All units are 100% triple tested to ensure quality and performance
    • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Premium – Alternator: Remanufactured, 90 Amps, Limited Lifetime Warranty (Part No.13444A)

Alternator: Remanufactured, 90 Amps, Limited Lifetime Warranty

from

$192.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


    Product Features:
    • Designed to meet or exceed OE specifications for fit, form and function
    • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 100% new OE-quality brushes and bearings are used to ensure long service life
    • Rotors and stators are load tested and double insulated for maximum charging performance
    • Slip rings are precision polished for maximum brush contact and service life
    • Application-specific technical bulletins included where applicable
    • All units are 100% triple tested to ensure quality and performance
    • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Omix – Alternator: 170 Amps (Part No.17225.18)

Alternator: 170 Amps

from

$819.99
Ensure your vehicle’s electrical system runs smoothly with this high-performance alternator. Designed with a robust 160-amp output, it provides reliable power to support your car’s computers, sensors, and other electrical components. Built in an OE style, this alternator offers a seamless, direct-fit installation, making it an ideal replacement for your worn-out or failing unit. If you’re experiencing symptoms like a check engine light or low voltage readings, this alternator is engineered to restore optimal performance and prevent further electrical issues. Its durable construction ensures long-lasting functionality, delivering excellent value and peace of mind for your investment.

Product Features:


    Product Features:
    • 160 amp
    • OE Style
    • Direct Fit
    • High-performance design ensures reliable power delivery to support advanced vehicle electronics.
    • Durable construction enhances longevity, providing consistent functionality and value over time.
See More

Bosch – Alternator: New, 78 Amps (Part No.AL547N)

Alternator: New, 78 Amps

from

$203.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding driving conditions. Engineered with 100% new components, it is built to endure the harshest environments, ensuring optimal functionality and an extended lifespan. Designed to handle excessive heat and high electrical demands, this alternator is perfect for modern vehicles with advanced electrical systems. With a robust 78-amp output and 12 VDC voltage, it provides consistent power to keep your vehicle running smoothly. Precision-crafted mounting points are gauged, resized, or rethreaded for a perfect fit, ensuring hassle-free installation. Additionally, the purchase includes free 24-hour Roadside Assistance Protection, adding extra value and peace of mind. For drivers seeking durability, reliability, and superior performance, this alternator is an excellent investment.

Product Features:


    Product Features:
    • 100% new components withstand the harshest environments for the best performance and longest life
    • Built specifically to withstand excessive heat and high electrical demands.
    • All mounting points 100% gauged and resized or rethreaded for proper fit
    • Free 24-hour Roadside Assistance Protection with purchase of any Bosch Alternator
    • Designed to deliver consistent and reliable power output, the 78-amp capacity ensures optimal performance for modern vehicles with advanced electrical systems.
See More

Bosch – Alternator: Remanufactured, 160 Amps, 2 Year Limited Warranty (Part No.AL6486X)

Alternator: Remanufactured, 160 Amps, 2 Year Limited Warranty

from

$183.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding automotive applications. With a robust 160-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for your vehicle’s electrical systems. Engineered with high-quality materials and cutting-edge technology, it is built to withstand rigorous use and provide long-lasting durability. The unit is remanufactured, not rebuilt, and undergoes 100% factory testing to meet Bosch’s strict performance standards. Additionally, it is full-load tested to guarantee compliance with specifications, ensuring optimal functionality. Designed for clockwise rotation, this alternator is a dependable solution for maintaining your vehicle’s electrical performance.

Product Features:


    Product Features:
    • Full-load tested to guarantee compliance with Bosch’s strict performance specifications
    • 100% factory tested, units are remanufactured (not rebuilt)
    • Built to last – uses high quality materials and the most technologically advanced developments.
    • Designed to deliver consistent and reliable power output, ensuring optimal performance for demanding automotive applications.
    • Engineered for durability with robust construction to withstand rigorous use and maintain long-lasting functionality.
See More

Carquest Premium – Alternator Diode Trio (Part No.SCA1002)

Alternator Diode Trio

from

$6.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

FAG US – Radial Insert Ball Bearing (Part No.6203-RSR)

Radial Insert Ball Bearing

from

$36.49
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • Radial Ball Bearing, Both Sides Shield.
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

National – Multi-Purpose Bearing (Part No.MNJ-471-S)

Multi-Purpose Bearing

from

$14.49
Product Features:
  • RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
  • PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Carquest Premium – Alternator Rectifier Bridge (Part No.SCA1008)

Alternator Rectifier Bridge

from

$31.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

Carquest Premium – Alternator Brush Set (Part No.XAA1042)

Alternator Brush Set

from

$10.49
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

Carquest Premium – Alternator Brush Holder (Part No.XAC1044)

Alternator Brush Holder

from

$14.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

Carquest – Alternator Brush Set (Part No.X311)

Alternator Brush Set

from

$12.99
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Most Popular Alternator Miscellaneous Part for 1990 Jeep Wranglers

Enhance your 1990 Jeep Wrangler with this popular Alternator Miscellaneous Part we have in stock, for $18.99.

National – Multi-Purpose Bearing (Part No.203-F)

Multi-Purpose Bearing

from

$18.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Best-Selling 1990 Jeep Wrangler Alternators

Upgrade your Wrangler with one of our 6 best-selling Alternators, earning an average 3 stars rating across 21 reviews.

Carquest Premium – Alternator: Remanufactured, 78 Amps, Limited Lifetime Warranty (Part No.7273-9A)

Alternator: Remanufactured, 78 Amps, Limited Lifetime Warranty

from

$110.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • 100% new OE-quality brushes and bearings are used to ensure long service life
  • Rotors and stators are load tested and double insulated for maximum charging performance
  • Slip rings are precision polished for maximum brush contact and service life
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Standard – Alternator: Remanufactured, 78 Amps, 1 Year Limited Warranty (Part No.7273-9AV)

Alternator: Remanufactured, 78 Amps, 1 Year Limited Warranty

from

$78.99
Carquest Standard alternators are designed and built to meet original equipment (O.E.) specifications, while providing great value. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. All of our Carquest Standard alternators are inspected and 100% tested to ensure they are built to meet OEM fit, form and function. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


Product Features:
  • Designed to meet OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Bosch – Alternator: New, 78 Amps (Part No.AL547N)

Alternator: New, 78 Amps

from

$203.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding driving conditions. Engineered with 100% new components, it is built to endure the harshest environments, ensuring optimal functionality and an extended lifespan. Designed to handle excessive heat and high electrical demands, this alternator is perfect for modern vehicles with advanced electrical systems. With a robust 78-amp output and 12 VDC voltage, it provides consistent power to keep your vehicle running smoothly. Precision-crafted mounting points are gauged, resized, or rethreaded for a perfect fit, ensuring hassle-free installation. Additionally, the purchase includes free 24-hour Roadside Assistance Protection, adding extra value and peace of mind. For drivers seeking durability, reliability, and superior performance, this alternator is an excellent investment.

Product Features:


Product Features:
  • 100% new components withstand the harshest environments for the best performance and longest life
  • Built specifically to withstand excessive heat and high electrical demands.
  • All mounting points 100% gauged and resized or rethreaded for proper fit
  • Free 24-hour Roadside Assistance Protection with purchase of any Bosch Alternator
  • Designed to deliver consistent and reliable power output, the 78-amp capacity ensures optimal performance for modern vehicles with advanced electrical systems.
See More

Powermaster Performance – Alternator: 12si Style, 1V-Belt Pulley, 150 Amps, Chrome (Part No.37293)

Alternator: 12si Style, 1V-Belt Pulley, 150 Amps, Chrome

from

$285.99
Elevate your vehicle’s performance with this high-output alternator, designed to meet the demands of drag racing, circle track, asphalt, or dirt. Featuring the Ad244 style, it delivers a superior 140-amp output at idle, ensuring consistent power when you need it most. Built with a heavy-duty regulator and rectifier, high-temperature windings, and dual internal fans, this alternator guarantees exceptional efficiency and cooling under extreme conditions. Its late-model compatibility with remote voltage control ensures seamless integration with modern vehicles, while the proof of performance tag provides confidence in its reliability. Whether you’re on the track or off-road, this alternator is engineered for durability and peak performance.

Product Features:


Product Features:
  • Ad244 Style
  • Superior Output At Idle, A Whopping 140 Ampere
  • Heavy Duty Regulator And Rectifier
  • High Temperature Windings
  • Dual Internal Fans For High Efficiency And Excellent Cooling
  • Late Model Compatibility With Remote Voltage Control
  • Proof Of Performance Tag
See More

Powermaster Performance – Alternator: 12si Style, 1V-Belt Pulley, 150 Amps, One Or Three Wire, Polished (Part No.67293)

Alternator: 12si Style, 1V-Belt Pulley, 150 Amps, One Or Three Wire, Polished

from

$285.99
The 150 Amp Alternator by Powermaster is engineered to meet the demands of high-performance racing, whether you’re into drag racing, circle track, asphalt, or dirt. Designed for versatility, it offers one or three-wire operation and delivers an impressive 70 amperes at idle, ensuring reliable power when you need it most. Featuring a gold battery post and a proof-of-performance tag, this alternator is a bolt-on upgrade for early model vehicles, combining modern efficiency with classic compatibility. Powermaster provides the largest selection of fans, pulleys, nose cones, and baffle plates in the industry, with an optional custom high-volume fan for enhanced cooling. Built for durability and peak performance, this alternator is the ultimate choice for racers who demand reliability and power on the track.

Product Features:


Product Features:
  • One Or Three Wire Operation
  • 70 Ampere At Idle
  • Gold Battery Post
  • Proof Of Performance Tag
  • Bolt-on Early Model Upgrade
  • Gold Battery Post. Proof Of Performance Tag
  • Largest Selection Of Fans, Pulleys, Nose Cones, And Baffle Plates In The Industry. Optional Custom HV (High Volume) Fan
See More

Carquest HD Electrical – Alternator – 12SI IR/EF 94 Amp/12 Volt, CW, 1-Groove Pulley (Part No.71-7294-9N)

Alternator - 12SI IR/EF 94 Amp/12 Volt, CW, 1-Groove Pulley

from

$169.99
Carquest Starters with 100% NEW construction will restore hard working vehicles to exceed OE specified performance & endurance. All new units and components offer unmatched performance, reduce downtime & customer comebacks. Carquest HD alternators are primed to keep you moving forward. Built to perform in severe duty environments where consistent efficient high outputs are required.

Product Features:


Product Features:
  • Contains Innovative Brush-less and Premium Brush Components that have been tested and certified for highest possible power output
  • Stator – wound to OE specifications. Heavy coated Polyester wire provides consistent conductivity
  • Premium Transpo rectifiers use 13mm press fit Diodes for maximum performance
  • Rotor shafts CNC machined & precision balanced to eliminate vibration
  • Over-Voltage shutdown limits voltage if output terminal is disconnected form the battery
  • Load dump protection ensures transient voltage spikes do not damage transistor
  • Improved power transmission with lower engine speed keeps accessories and powered implements running at maximum output without additional load to the engine.
See More

Top-Quality Alternator Rectifiers for 1990 Jeep Wranglers

Choose a high-quality OEM or aftermarket Alternator Rectifier for Jeep Wranglers and enjoy top-notch performance from $31.99.

Carquest Premium – Alternator Rectifier Bridge (Part No.SCA1008)

Alternator Rectifier Bridge

from

$31.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

Top Picks for 1990 Jeep Wrangler Commutator End Bearings

Invest in one of our 2 durable Commutator End Bearings for your 1990 Jeep, knowing you’re getting trusted brands and expert craftsmanship.

National – Multi-Purpose Bearing (Part No.MNJ-471-S)

Multi-Purpose Bearing

from

$14.49
Product Features:
  • RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
  • PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

FAG US – Radial Insert Ball Bearing (Part No.6203-RSR)

Radial Insert Ball Bearing

from

$36.49
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • Radial Ball Bearing, Both Sides Shield.
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

Alternator and Generator Brush Parts for 1990 Jeep Wranglers

Make a smart move for your 1990 Jeep Wrangler with products all priced from $10.49 to $14.99.

Carquest – Alternator Brush Set (Part No.X311)

Alternator Brush Set

from

$12.99
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Carquest Premium – Alternator Brush Holder (Part No.XAC1044)

Alternator Brush Holder

from

$14.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

Carquest Premium – Alternator Brush Set (Part No.XAA1042)

Alternator Brush Set

from

$10.49
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

FAQs for 1990 Jeep Wrangler Alternator Parts

What are the best-selling Alternator Parts for 1990 Jeep Wranglers?

Out of 14 Alternator Parts that fit 1990 Jeep Wranglers, the following parts are the top sellers:

What’s the price range for 1990 Jeep Wrangler Alternator Parts?

The prices of Alternator Parts for the 1990 Jeep Wrangler range from $6.99 up to $285.99 for the most premium parts.

What is the average price of an Alternator Part for a 1990 Jeep Wrangler?

The average price for Alternator Parts for the 1990 Jeep Wrangler is $91.67. Keep in mind the variety of part types within our Alternator Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Alternator Parts for other Jeep Wrangler model years?

Yes, we carry Alternator Parts for 34 model years of Jeep Wranglers between 1987 and 2023. The following model years are the most popular for Alternator Part purchases: 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, and 2013.

What are the cheapest Alternator Parts for my 1990 Jeep Wrangler?

The cheapest 1990 Jeep Wrangler Alternator Parts we carry are:

Does Advance Auto Parts sell Alternator Parts for any other 1990 Jeep models?

Yes. We stock Alternator Parts for 3 other popular 1990 Jeep models. Some of the most popular are 1990 Cherokee Alternator Parts, 1990 Grand Wagoneer Alternator Parts, 1990 Wagoneer Alternator Parts, and 1990 Comanche Alternator Parts.

What are the top-rated Alternator Parts that fit the 1990 Jeep Wrangler?

The one 1990 Jeep Wrangler Alternator Part we have in stock is the Alternator Diode Trio. It costs $6.99.

What types of Alternator Parts do you sell for my 1990 Jeep Wrangler?

As of 11/2/25, these are some of the most in-demand types of Alternator Parts for a 1990 Jeep Wrangler:

Can I get help with 1990 Jeep Wrangler Alternator Part orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Jeep Alternator Parts and more.

What is your return policy for Jeep Wrangler Alternator Parts?

Advance Auto Parts keeps returns simple. For new Jeep Wrangler Alternator Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.