2021 Volkswagen Jetta Alternator Parts

Keep Your 2021 Volkswagen Jetta in Top Shape with a Quality Alternator Part

When it comes to maintaining or upgrading your 2021 Volkswagen Jetta, 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 Jetta. 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 Volkswagen Jetta 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 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 Volkswagen Jetta running smoothly and looking great.

Essential 2021 Volkswagen Jetta Alternator Parts

WAI – Bosch Ir/Ef 90 Amp/12Volt, Cw, W/O Pulley, Limited Lifetime Warranty (Part No.14821N)

Bosch Ir/Ef 90 Amp/12Volt, Cw, W/O Pulley, Limited Lifetime Warranty

from

$197.99
Alternator: New, 90 Amps by WAI delivers exceptional performance and reliability, engineered to meet or exceed OEM specifications for a seamless fit and hassle-free installation. Designed with advanced voltage regulator protection, it safeguards against transient voltage spikes, preventing potential battery damage while ensuring efficient communication with the ECU. The high-power rectifier assembly features open junction press-fit diodes, promoting cooler operation and enhanced durability. With low saturation voltage, heat dissipation is minimized, ensuring long-lasting functionality. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the moment it powers on. Built for superior quality, this alternator is a dependable choice for maintaining your vehicle’s electrical system.

Product Features:
  • Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
  • Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
  • High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
  • Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
  • Built with superior quality materials, this alternator ensures dependable performance, making it a reliable choice for maintaining your vehicle’s electrical system.
See More

Carquest Premium – Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty (Part No.11723A)

Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty

from

$444.99
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, 150 Amps, 2 Year Limited Warranty (Part No.AL0834X)

Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty

from

$378.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 150-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for demanding applications. It features a clockwise rotation direction and is meticulously remanufactured – not rebuilt – to meet Bosch’s stringent performance standards. Each unit undergoes full-load and 100% factory testing, guaranteeing compliance with the highest quality benchmarks. Built with premium materials and advanced technology, this alternator is engineered for long-lasting durability and dependable operation. Whether you’re replacing a worn-out unit or upgrading, this alternator offers unmatched value and peace of mind.

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 for demanding applications, the 150-amp output ensures reliable power delivery to support your vehicle’s electrical needs.
    • Engineered with a clockwise rotation direction for seamless compatibility with your vehicle’s system.
See More

Carquest Premium – Alternator: Remanufactured, 110 Amps, Limited Lifetime Warranty (Part No.23355A)

Alternator: Remanufactured, 110 Amps, Limited Lifetime Warranty

from

$277.99
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, 140 Amps, Limited Lifetime Warranty (Part No.11254A)

Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty

from

$300.99
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

Valeo – Alternator: New, 140 Amps (Part No.439393)

Alternator: New, 140 Amps

from

$579.99
The Valeo premium alternator delivers exceptional performance and reliability, boasting a robust 140-amp output and 12 VDC voltage. Designed with 100% new components and core, it eliminates the risk of premature failure, ensuring superior durability compared to remanufactured units. Engineered for an exact fit with application-specific parts, this alternator integrates premium rare earth magnets to maximize efficiency without increasing size. Tested under extreme conditions for up to six months, it guarantees reliability even in the harshest environments, withstanding heat, vibration, and contaminating particles to maintain maximum charge output. Its innovative design not only boosts fuel economy but also eliminates voltage drops, making it a top choice for demanding electrical systems. With a clockwise rotation direction and award-winning technology, this alternator is a testament to Valeo’s legacy of excellence in automotive electrical systems since 1923.

Product Features:
  • Valeo premium alternators are 100% new products (not remanufactured)
  • 100% new components and core eliminates premature failure for increased durability over remanufactured units
  • All parts are application specific for an exact fit
  • Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
  • All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
  • High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
See More

Carquest Premium – Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty (Part No.10317A)

Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty

from

$473.99
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, 90 Amps, 2 Year Limited Warranty (Part No.AL0732X)

Alternator: Remanufactured, 90 Amps, 2 Year Limited Warranty

from

$301.99
The Bosch Premium Alternator, remanufactured to deliver 90 amps of power, is engineered for exceptional performance and reliability. Operating at 12 VDC with a clockwise rotation, this alternator is full-load tested to meet Bosch’s rigorous performance standards. Unlike rebuilt units, it is 100% factory tested and remanufactured using high-quality materials and cutting-edge technology, ensuring long-lasting durability. Whether you’re replacing a worn-out alternator or upgrading for better performance, this unit is built to handle demanding electrical loads with ease. Trust Bosch for a dependable solution that keeps your vehicle running smoothly.

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 to handle demanding electrical loads, ensuring reliable performance under high-stress conditions.
    • Designed for smooth operation with a precise clockwise rotation, enhancing compatibility and efficiency.
See More

Bosch – Alternator: Remanufactured, 140 Amps, 2 Year Limited Warranty (Part No.AL0880X)

Alternator: Remanufactured, 140 Amps, 2 Year Limited Warranty

from

$433.99
The Bosch Premium Alternator is engineered to deliver exceptional performance and reliability, making it a trusted choice for your vehicle’s electrical system. With a robust 140-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for all your vehicle’s electrical needs. It is full-load tested to meet Bosch’s stringent performance standards, guaranteeing top-tier functionality. Unlike rebuilt units, this alternator is 100% factory remanufactured, ensuring superior quality and durability. Constructed with high-quality materials and incorporating the latest technological advancements, it is built to withstand demanding conditions. Its counterclockwise rotation direction ensures compatibility with specific vehicle requirements. Choose this alternator for a dependable, long-lasting solution that keeps your vehicle running smoothly.

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.
    • Delivers a robust 140-amp output to ensure reliable power for demanding electrical systems.
    • Counterclockwise rotation design enhances compatibility with specific vehicle models.
See More

Valeo – Alternator: New, 90 Amps (Part No.439311)

Alternator: New, 90 Amps

from

$319.99
Valeo’s 90 Amp alternator is a premium, 100% new product designed to deliver exceptional performance and durability. Unlike remanufactured units, this alternator features all-new components and core, eliminating the risk of premature failure and ensuring long-lasting reliability. Engineered with application-specific precision, it guarantees an exact fit for seamless installation. Utilizing premium rare earth magnets, it achieves higher output without increasing size, enhancing efficiency and fuel economy. Tested under extreme conditions for up to six months, this alternator is built to withstand heat, vibration, and contaminants, maintaining maximum charge output even in the harshest environments. Operating at 12 VDC with a clockwise rotation, this Valeo OE family alternator is the original equipment part (Part Number 439311) now available in the aftermarket, offering unmatched quality and performance.

Product Features:
  • Valeo premium alternators are 100% new products (not remanufactured)
  • 100% new components and core eliminates premature failure for increased durability over remanufactured units
  • All parts are application specific for an exact fit
  • Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
  • All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
  • High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
  • Part Number 439311 is the original equipment part now available in the aftermarket.
See More

Bosch – Alternator: New, 140 Amps (Part No.AL0193N)

Alternator: New, 140 Amps

from

$648.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With an impressive 140-amp amperage rating and a 14 VDC voltage output, this alternator ensures consistent power delivery to support your vehicle’s demanding electrical needs. Designed for clockwise rotation, it integrates seamlessly into compatible systems, providing smooth and efficient operation. Built with premium materials and tested rigorously, this alternator offers durability and long-lasting performance, reducing the need for frequent replacements. Whether you’re upgrading or replacing, this alternator is engineered to meet high standards, offering excellent value and dependable functionality for your vehicle.

Product Features:


    Product Features:
    • Provides a robust 140-amp amperage rating to support high-demand electrical systems effectively.
    • Delivers consistent 14 VDC voltage output for reliable power distribution across vehicle components.
    • Engineered for clockwise rotation, ensuring smooth integration and efficient operation in compatible systems.
    • Constructed with premium materials and rigorously tested for enhanced durability and long-lasting performance.
    • Ideal for upgrading or replacing, offering dependable functionality and excellent value for your vehicle’s electrical system.
See More

Bosch – Alternator: Remanufactured, 140 Amps, 2 Year Limited Warranty (Part No.AL0889X)

Alternator: Remanufactured, 140 Amps, 2 Year Limited Warranty

from

$373.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding automotive needs. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent and dependable operation. Remanufactured with precision, not simply rebuilt, it incorporates high-quality materials and advanced technology for long-lasting durability. With an impressive 140-amp rating and 12 VDC output, it provides robust power to support your vehicle’s electrical systems. Designed with a clockwise rotation direction and crafted from durable aluminum, this alternator is built to withstand the challenges of daily driving. Whether you’re replacing a worn-out unit or upgrading for enhanced performance, this alternator offers unmatched value and reliability.

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.
    • Provides a robust 140-amp output to efficiently support demanding vehicle electrical systems.
    • Designed with durable aluminum construction to ensure reliability and withstand daily driving challenges.
See More

Bosch – Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (Part No.AL0723X)

Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty

from

$355.99
The Bosch Premium Alternator, remanufactured to deliver 120 amps of power, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent operation under demanding conditions. With a 12 VDC voltage rating and clockwise rotation direction, it is designed to integrate seamlessly into your vehicle’s electrical system. Built using high-quality materials and advanced technology, it offers superior durability and long-lasting functionality. Unlike rebuilt units, this alternator is 100% factory tested and remanufactured to guarantee optimal performance. Whether you’re replacing a worn-out alternator or upgrading for better efficiency, this premium part provides excellent value and dependable power delivery.

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.
    • Seamless integration into your vehicle’s electrical system with a 12 VDC voltage rating and clockwise rotation direction.
    • Engineered for consistent operation under demanding conditions, ensuring reliable power delivery.
See More

WAI – Bosch Ir/If 90 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13605N)

Bosch Ir/If 90 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty

from

$186.99
This 90-amp alternator from WAI is a premium choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. Its advanced voltage regulator protection guards against transient voltage spikes, preventing potential battery damage, while the low saturation voltage minimizes heat dissipation for enhanced durability. The high-power rectifier assembly, featuring open junction press-fit diodes, is designed to keep the unit running cool even under demanding conditions. Fully compliant with ECU communication, this alternator guarantees seamless integration with your vehicle’s system. Each unit is rigorously tested, and a printed copy of the test results is included, giving you confidence in its performance from the very first use. Whether you’re replacing a worn-out alternator or upgrading for better efficiency, this WAI product delivers exceptional value and long-lasting dependability.

Product Features:
  • Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
  • Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
  • High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
  • Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
  • Designed for enhanced durability, the advanced low saturation voltage feature minimizes heat dissipation, ensuring reliable performance even under demanding conditions.
See More

Carquest Professional – Alternator: New, 140 Amps, Limited Lifetime Warranty (Part No.11254AN)

Alternator: New, 140 Amps, Limited Lifetime Warranty

from

$361.99
Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators are built with all new components and are 100% triple tested to ensure high quality that is 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
    • Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
    • All new components are utilized to ensure long service life
    • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
    • Internal electronics are upgraded for heavy duty reliability (where applicable)
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 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
    • Rotors and stators are load tested and double insulated for maximum charging performance
See More

Bosch – Alternator: New, 140 Amps (Part No.AL0880N)

Alternator: New, 140 Amps

from

$414.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With an impressive 140-amp amperage rating and 12 VDC voltage, this alternator ensures consistent power delivery to support your vehicle’s demanding electrical needs. Designed for clockwise rotation, it integrates seamlessly into compatible systems, providing smooth and efficient operation. Built with premium materials and tested rigorously, this alternator is engineered for durability and long-lasting performance, reducing the need for frequent replacements. Whether you’re upgrading or replacing, this alternator offers outstanding value by combining advanced engineering with dependable functionality to keep your vehicle running at its best.

Product Features:


    Product Features:
    • Delivers a robust 140-amp amperage rating to reliably support high-demand electrical systems.
    • Operates at 12 VDC voltage for consistent and efficient power delivery.
    • Designed for clockwise rotation to ensure seamless integration with compatible systems.
    • Constructed with premium materials for enhanced durability and long-lasting performance.
    • Rigorously tested to minimize the need for frequent replacements, offering dependable functionality.
See More

Carquest Premium – Alternator: Remanufactured, 70 Amps, Limited Lifetime Warranty (Part No.13850A)

Alternator: Remanufactured, 70 Amps, Limited Lifetime Warranty

from

$219.99
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 Professional – Alternator: New, 140 Amps, Limited Lifetime Warranty (Part No.11460AN)

Alternator: New, 140 Amps, Limited Lifetime Warranty

from

$556.99
Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators 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
    • All new components are utilized to ensure long service life
    • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
    • Internal electronics are upgraded for heavy duty reliability (where applicable)
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 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
    • Rotors and stators are load tested and double insulated for maximum charging performance
See More

Carquest Premium – Alternator: Remanufactured, 90 Amps, Limited Lifetime Warranty (Part No.13852-7SA)

Alternator: Remanufactured, 90 Amps, Limited Lifetime Warranty

from

$241.99
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

Valeo – Alternator: New, 140 Amps (Part No.849165)

Alternator: New, 140 Amps

from

$319.99
The Valeo premium alternator delivers unmatched performance and reliability, boasting a 140-amp output and 14 VDC voltage for optimal electrical system efficiency. Designed with 100% new components and core, it eliminates the risk of premature failure, ensuring superior durability compared to remanufactured units. Featuring premium rare earth magnets, this alternator maximizes output without increasing size, enhancing fuel economy and overall efficiency. Engineered for exact fit with application-specific parts, it guarantees seamless installation and compatibility. Rigorous testing under extreme conditions for up to six months ensures reliability in the harshest environments, while its high resistance to heat, vibration, and contaminants maintains maximum charge output. As a PACE Award-winning innovation, this alternator exemplifies Valeo’s legacy of excellence in electrical systems since 1923, offering exceptional value and long-lasting performance.

Product Features:
  • Valeo premium alternators are 100% new products (not remanufactured)
  • 100% new components and core eliminates premature failure for increased durability over remanufactured units
  • All parts are application specific for an exact fit
  • Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
  • All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
  • High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
See More

Bosch – Alternator: New, 140 Amps (Part No.AL0889N)

Alternator: New, 140 Amps

from

$428.99
The Bosch Premium Alternator, delivering a robust 140-amp output, is engineered for exceptional performance and reliability. Built with a durable aluminum construction, this alternator ensures long-lasting durability while maintaining a lightweight design. Operating at 12 VDC with a clockwise rotation direction, it is designed to meet the demanding electrical needs of modern vehicles. Whether powering advanced electronics or ensuring consistent battery charging, this alternator provides dependable performance under all conditions. Its premium build quality and rigorous testing make it a trusted choice for those seeking a reliable and efficient power solution for their vehicle.

Product Features:


    Product Features:
    • Delivers a robust 140-amp output to meet the demanding electrical needs of modern vehicles.
    • Lightweight aluminum construction ensures durability without adding unnecessary weight.
    • Operates at 12 VDC with a clockwise rotation for compatibility with a wide range of vehicle systems.
    • Engineered for consistent battery charging and reliable power delivery under all conditions.
    • Premium build quality and rigorous testing provide exceptional performance and long-term reliability.
See More

Carquest Professional – Alternator: New, 140 Amps, Limited Lifetime Warranty (Part No.23255AN)

Alternator: New, 140 Amps, Limited Lifetime Warranty

from

$586.99
Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators 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
    • All new components are utilized to ensure long service life
    • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
    • Internal electronics are upgraded for heavy duty reliability (where applicable)
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 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
    • Rotors and stators are load tested and double insulated for maximum charging performance
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WAI – Valeo Ir/If 90 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13946N)

Valeo Ir/If 90 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty

from

$295.99
The WAI 90 Amp Alternator is a premium choice for reliable performance and durability. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation for your vehicle. Featuring advanced voltage regulator protection, it safeguards against transient voltage spikes, preventing potential battery damage while maintaining efficient communication with the ECU. Its high-power rectifier assembly, equipped with open junction press-fit diodes, is designed to run cooler and last longer, even under demanding conditions. With low saturation voltage, this alternator minimizes heat dissipation, enhancing overall efficiency. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. Whether you’re replacing a worn-out alternator or upgrading for better reliability, this 100% new alternator delivers exceptional value and peace of mind.

Product Features:
  • Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
  • Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
  • High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
  • Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
  • Designed for durability under demanding conditions, the alternator’s advanced construction ensures long-lasting performance and reliability, making it an ideal choice for vehicles requiring consistent power output.
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Valeo – Alternator: New, 90 Amps (Part No.439778)

Alternator: New, 90 Amps

from

$374.99
The Valeo premium alternator, designed with a 90-amp output and 12 VDC voltage, is a top-tier solution for reliable electrical performance. Built entirely with new components, this alternator eliminates the risk of premature failure often associated with remanufactured units, ensuring long-lasting durability. Featuring premium rare earth magnets, it delivers enhanced efficiency without increasing size, making it ideal for modern vehicles. Engineered for an exact fit with application-specific parts, it guarantees seamless installation and compatibility. Rigorous testing under extreme conditions for up to six months ensures its reliability in the harshest environments, including resistance to heat, vibration, and contaminants. As an original equipment part now available in the aftermarket, this alternator maintains maximum charge output while boosting fuel economy. With a clockwise rotation direction and Valeo’s legacy of innovation, this alternator is a trusted choice for superior performance and value.

Product Features:
  • Valeo premium alternators are 100% new products (not remanufactured)
  • 100% new components and core eliminates premature failure for increased durability over remanufactured units
  • All parts are application specific for an exact fit
  • Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
  • All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
  • High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
  • Part Number 439778 is the original equipment part now available in the aftermarket.
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Valeo – Alternator: New, 120 Amps (Part No.439312)

Alternator: New, 120 Amps

from

$404.99
Alternator: New, 120 Amps by Valeo is a premium solution designed to deliver exceptional performance and reliability. Built with 100% new components and core, this alternator eliminates the risk of premature failure, offering superior durability compared to remanufactured units. Engineered with application-specific parts for an exact fit, it ensures seamless integration into your vehicle’s electrical system. Featuring premium rare earth magnets, it boosts output efficiency without increasing size, making it a compact yet powerful choice. Tested under extreme conditions for up to six months, this alternator guarantees reliability even in the harshest environments, with high resistance to heat, vibration, and contaminants. With a 120-amp rating, 12 VDC voltage, and clockwise rotation, it meets demanding electrical needs while maintaining maximum charge output. As the original equipment part now available in the aftermarket, Valeo’s alternator combines innovation and durability, making it a trusted choice for enhancing fuel economy and eliminating voltage drops.

Product Features:
  • Valeo premium alternators are 100% new products (not remanufactured)
  • 100% new components and core eliminates premature failure for increased durability over remanufactured units
  • All parts are application specific for an exact fit
  • Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
  • All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
  • High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
  • Part Number 439312 is the original equipment part now available in the aftermarket.
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Bosch – Alternator: Remanufactured, 90 Amps, 2 Year Limited Warranty (Part No.AL0188X)

Alternator: Remanufactured, 90 Amps, 2 Year Limited Warranty

from

$282.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for automotive electrical systems. With a robust 90-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for your vehicle’s needs. Engineered with high-quality materials and cutting-edge technology, it is built to last and withstand demanding conditions. Its clockwise rotation direction and full-load testing guarantee compliance with Bosch’s stringent performance standards, ensuring optimal functionality. Unlike rebuilt units, this alternator is 100% factory-tested and remanufactured for superior quality and dependability. Whether you’re replacing a worn-out alternator or upgrading for better performance, this premium component offers unmatched durability and value.

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 90-amp power output, ensuring reliable performance for demanding automotive electrical systems.
    • Engineered to withstand challenging conditions, providing long-lasting durability and dependable operation.
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WAI – Bosch Ir/If 140 Amp/12 Volt, Ccw, 5-Groove Clutch Pulley, Limited Lifetime Warranty (Part No.11460N)

Bosch Ir/If 140 Amp/12 Volt, Ccw, 5-Groove Clutch Pulley, Limited Lifetime Warranty

from

$242.99
This 140-amp alternator from WAI is a premium choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. The advanced voltage regulator protection guards against transient voltage spikes, preventing potential battery damage, while its low saturation voltage minimizes heat dissipation for enhanced durability. The high-power rectifier assembly, equipped with open junction press-fit diodes, keeps the unit running cool even under demanding conditions. Fully compliant with ECU communication, this alternator delivers seamless integration with your vehicle’s systems. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. Designed for long-lasting efficiency, this alternator is a dependable solution for your vehicle’s electrical needs.

Product Features:
  • Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
  • Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
  • High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
  • Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
  • Designed for enhanced durability, the alternator’s advanced construction minimizes heat dissipation, ensuring reliable performance even under demanding conditions.
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Carquest Premium – Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty (Part No.10344A)

Alternator: Remanufactured, 140 Amps, Limited Lifetime Warranty

from

$421.99
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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Most Popular Alternator for 2021 Volkswagen Jettas

Enhance your 2021 Volkswagen Jetta with this popular Alternator we have in stock, for $383.99.

Carquest Premium – Alternator: Remanufactured, 140 Amps (Part No.10458A)

Alternator: Remanufactured, 140 Amps

from

$383.99
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 Volkswagen Jetta Alternator Parts

What’s the price range for 2021 Volkswagen Jetta Alternator Parts?

We currently have just one Alternator Parts for the 2021 Volkswagen Jetta in stock: Alternator: Remanufactured, 140 Amps and it costs $383.99.

Does Advance Auto Parts sell Alternator Parts for other Volkswagen Jetta model years?

Yes, we carry Alternator Parts for 42 model years of Volkswagen Jettas between 1980 and 2025. The following model years are the most popular for Alternator Part purchases: 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, and 2010.

What types of Alternator Parts do you sell for my 2021 Volkswagen Jetta?

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

Can I get help with 2021 Volkswagen Jetta Alternator Part orders?

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

What is your return policy for Volkswagen Jetta Alternator Parts?

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