2020 Subaru WRX Alternators and Starters

Essential Alternators and Starters for 2020 Subaru WRXes

Bosch – Alternator: Remanufactured, 180 Amps, 2 Year Limited Warranty (Part No.AL4322X)

Alternator: Remanufactured, 180 Amps, 2 Year Limited Warranty

from

$392.99
The Bosch Premium Alternator, delivering 180 amps and 12 VDC, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures dependable operation under demanding conditions. Unlike rebuilt units, it is 100% factory-tested and remanufactured using high-quality materials and cutting-edge technology, guaranteeing long-lasting durability. Designed with a clockwise rotation direction, it is built to seamlessly integrate into your vehicle’s electrical system. Whether you’re upgrading or replacing, this alternator offers superior value and peace of mind, making it a trusted choice for maintaining your vehicle’s 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.
    • Engineered for seamless integration into your vehicle’s electrical system, ensuring optimal compatibility and performance.
    • Designed with a clockwise rotation direction to match specific vehicle requirements for efficient operation.
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Carquest Premium – Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty (Part No.10253A)

Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty

from

$442.99
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
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Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920073A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$90.99
Litens Automotive is the original equipment supplier for this Subaru application. This replacement alternator pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920054A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$80.99
Litens Automotive is the original equipment supplier for the 2015-2017 Subaru Legacy, Outback w/2.5L. This replacement pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
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Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.19515SN)

Starter: New, Limited Lifetime Warranty

from

$354.99
Carquest Professional starters are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new starters are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional starters are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new starters are built with all new components and are 100% triple-tested to ensure high quality that is 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:


    Product Features:
    • Designed to meet or exceed OE specifications for fit, form and function
    • Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
    • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
    • All new components are utilized to ensure long service life
    • Internal electronics are upgraded for heavy duty reliability (where applicable)
    • Armatures and commutators are 100% load tested
    • 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
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Bosch – Starter: Remanufactured (Part No.SR4316X)

Starter: Remanufactured

from

$339.99
Bosch Premium Starters deliver exceptional performance and reliability, making them a trusted choice for your vehicle’s ignition system. Engineered with precision, this remanufactured starter features a counterclockwise (left) rotation and a 9-tooth design, ensuring seamless compatibility with your engine’s requirements. Operating at 12 VDC, it provides consistent power for dependable starts, even in demanding conditions. Built to meet rigorous testing standards, this starter combines durability with advanced engineering to withstand wear and tear over time. Whether you’re replacing a worn-out starter or upgrading for enhanced reliability, Bosch Premium Starters offer excellent value and peace of mind for your vehicle’s performance needs.

Product Features:


    Product Features:
    • Designed with a counterclockwise (left) rotation to ensure precise compatibility with your engine’s specific requirements.
    • Features a 9-tooth design for optimal engagement and smooth operation within your vehicle’s ignition system.
    • Operates at 12 VDC to deliver consistent and reliable power for dependable engine starts, even under demanding conditions.
    • Engineered to meet rigorous testing standards, ensuring long-lasting durability and resistance to wear and tear.
    • Remanufactured with precision to provide exceptional performance and reliability, offering excellent value for your vehicle’s ignition system.
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.19515S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$160.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle 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.
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Bosch – Starter: Remanufactured (Part No.SR4315X)

Starter: Remanufactured

from

$318.99
The Bosch Premium Starter is engineered to deliver exceptional performance and reliability, making it a trusted choice for your vehicle’s ignition system. Designed with a counterclockwise (left) rotation and featuring an 8-tooth configuration, this starter ensures precise engagement and smooth operation. Operating at 12 VDC, it provides consistent power to meet the demands of modern vehicles. Built to Bosch’s high standards, this remanufactured starter undergoes rigorous testing to ensure durability and long-lasting performance. Whether you’re replacing a worn-out starter or upgrading for better reliability, this premium component offers excellent value and compatibility with your vehicle’s electrical system.

Product Features:


    Product Features:
    • Engineered for exceptional performance and reliability, ensuring dependable ignition system operation.
    • Counterclockwise rotation design with an 8-tooth configuration for precise engagement and smooth functionality.
    • Operates at 12 VDC to deliver consistent power, meeting the demands of modern vehicle systems.
    • Remanufactured to Bosch’s high standards, undergoing rigorous testing for durability and long-lasting performance.
    • Offers excellent value and compatibility with a wide range of vehicle electrical systems.
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.52006S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$376.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle 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.
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Upgrade your 2020 Subaru WRX with Top-Quality Alternators and Starters

When it comes to maintaining or upgrading your 2020 Subaru WRX, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Subaru or enhancing its overall performance, Alternators and Starters are key to keeping your WRX functioning at its best. At Advance Auto Parts, we offer a wide selection of 5 Alternators and Starters for the 2020 Subaru WRX, designed to meet your needs without breaking the bank. From Alternator Part replacements to Starter Parts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Alternators and Starters for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Alternators and Starters for your 2020 Subaru WRX at great prices. Our Alternators and Starters inventory for this model ranges from just $80.99 to $442.99, with an average price of $283.39. Our 5 Alternators and Starters in stock come from 3 trusted brands, so you’re sure to find the right part for your 2020 Subaru WRX without overspending.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Alternators and Starter upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2020 Subaru WRX is always ready to roll. We’re committed to providing you with everything you need to keep your WRX in top shape, all in one place. Start shopping confidently below for your 2020 Subaru WRX!

Best-Selling Alternator Parts for 2020 Subaru WRXes

Enhance the driving experience in your Subaru with 1 quality Alternator Part components, starting at $442.99.

Carquest Premium – Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty (Part No.10253A)

Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty

from

$442.99
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

Most Popular 2020 Subaru WRX Starter Parts

Customize your Subaru with 3 Starter Parts products like Starters, all priced under $376.99.

Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.19515S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$160.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle 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.
See More

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.19515SN)

Starter: New, Limited Lifetime Warranty

from

$354.99
Carquest Professional starters are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new starters are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional starters are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new starters are built with all new components and are 100% triple-tested to ensure high quality that is 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:


Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
  • All new components are utilized to ensure long service life
  • Internal electronics are upgraded for heavy duty reliability (where applicable)
  • Armatures and commutators are 100% load tested
  • 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 – Starter: Remanufactured, Limited Lifetime Warranty (Part No.52006S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$376.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle 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.
See More

Top Picks for 2020 Subaru WRX Alternator Pulley Parts

Upgrade Subaru WRXes with top-quality Alternator Pulley Parts parts, including 1 OEM and aftermarket selections for your 2020 model.

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920054A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$80.99
Litens Automotive is the original equipment supplier for the 2015-2017 Subaru Legacy, Outback w/2.5L. This replacement pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More

FAQs for 2020 Subaru WRX Alternators and Starters

Which Alternators and Starters are best-sellers for 2020 Subaru WRXes?

Out of 5 Alternators and Starters that fit 2020 Subaru WRXes, the following parts are the top sellers:

What’s the price range for 2020 Subaru WRX Alternators and Starters?

Alternators and Starter prices for the 2020 Subaru WRX start at $80.99 and go up to $442.99 for the most premium parts.

What’s the average price of a Alternators and Starter for a 2020 Subaru WRX?

The average price for Alternators and Starters for the 2020 Subaru WRX is $283.39. Keep in mind the variety of part types within our Alternators and Starter category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Alternators and Starters for other Subaru WRX model years?

Yes, we currently carry Alternators and Starters for 5 model years of Subaru WRXes between 2015 and 2021. Alternators and Starters are bought most frequently for the following model years: 2021, 2019, 2018, 2017, 2016, and 2015.

What are the cheapest Alternators and Starters for my 2020 Subaru WRX?

The cheapest 2020 Subaru WRX Alternators and Starters we carry in stock are:

What types of Alternators and Starters do you sell for my 2020 Subaru WRX?

As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2020 Subaru WRX:

Can I get help with 2020 Subaru WRX Alternators and Starter orders?

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

What is your return policy for Subaru WRX Alternators and Starters?

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