2021 Subaru WRX Alternator Parts

Keep Your 2021 Subaru WRX in Top Shape with a Quality Alternator Part

When it comes to maintaining or upgrading your 2021 Subaru WRX, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Alternator Part for your WRX. We currently carry a top Alternator Part in stock that is built to last. Whether you’re replacing a damaged Alternator Part or looking to upgrade, our selection for the 2021 Subaru WRX ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Alternator Pulley Parts and Starter Parts to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2021 Subaru WRX running smoothly and looking great.

Essential 2021 Subaru WRX Alternator Parts

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

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.
See More

Most Popular Alternator for 2021 Subaru WRXes

Enhance your 2021 Subaru WRX with this popular Alternator we have in stock, for $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

FAQs for 2021 Subaru WRX Alternator Parts

What’s the price range for 2021 Subaru WRX Alternator Parts?

We currently have just one Alternator Parts for the 2021 Subaru WRX in stock: Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty and it costs $442.99.

Does Advance Auto Parts sell Alternator Parts for other Subaru WRX model years?

Yes, we carry Alternator Parts for 5 model years of Subaru WRXes between 2015 and 2020. The following model years are the most popular for Alternator Part purchases: 2020, 2019, 2018, 2017, 2016, and 2015.

Does Advance Auto Parts sell Alternator Parts for any other 2021 Subaru models?

Yes. We stock Alternator Parts for 1 other popular 2021 Subaru models. Some of the most popular are 2021 WRX STI Alternator Parts and 2021 Crosstrek Alternator Parts.

What types of Alternator Parts do you sell for my 2021 Subaru WRX?

We currently have just 1 Alternator Part in stock for a 2021 Subaru WRX, and as of 11/2/25, it is an Alternator.

Can I get help with 2021 Subaru WRX Alternator Part orders?

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

What is your return policy for Subaru WRX Alternator Parts?

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