2003 Audi A6 Alternators and Starters
Find Your Specific 2003 Audi A6 Alternators and Starters
Below you will find various in-demand Audi Alternators and Starters, components and accessories for your 2003 A6. Advance Auto Parts has popular A6 parts like Starter Parts, Alternator Parts, Voltage Regulator Parts and more. You’ll also find aftermarket and OEM Alternators and Starters for other A6 model years including
2010,
2011,
2012,
2013,
2014,
2015,
2016,
2017,
2018 and more. Select a category of 2003 Audi A6 Alternators and Starters below and start saving instantly.
Popular 2003 Audi A6 Alternators and Starters Categories
Essential Alternators and Starters for 2003 Audi A6s
Carquest Premium – Alternator: Remanufactured, 180 Amps, Limited Lifetime Warranty (Part No.11222A)
from
$225.99
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:
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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
Product Features:
Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0831X)
from
$334.99
The Bosch Premium Alternator, delivering 150 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, offering superior durability and longevity. Designed with a clockwise rotation direction, it is built to seamlessly integrate with your vehicle’s electrical system. Whether you’re replacing a worn-out alternator or upgrading for enhanced performance, this Bosch alternator provides the power and dependability you need to keep your vehicle running smoothly.
Product Features:
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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 with your vehicle’s electrical system, ensuring optimal compatibility and performance.
- Designed with a clockwise rotation direction to enhance operational efficiency and reliability.
Product Features:
Carquest Premium – Alternator: Remanufactured, 180 Amps, Limited Lifetime Warranty (Part No.11495A)
from
$505.99
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:
See More
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
Product Features:
Bosch – Alternator: New, 150 Amps (Part No.AL0831N)
from
$564.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With an impressive 150-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 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 high-quality construction with dependable functionality.
Product Features:
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Product Features:
- Provides a robust 150-amp amperage rating to meet the high electrical demands of modern vehicles.
- Delivers a consistent 14 VDC voltage output for reliable power supply to essential vehicle systems.
- Engineered with premium materials for enhanced durability and long-lasting performance.
- Designed for clockwise rotation to ensure seamless integration and smooth operation in compatible systems.
- Rigorously tested for reliability, reducing the need for frequent replacements and offering exceptional value.
Product Features:
Valeo – Alternator: New, 150 Amps (Part No.439782)
from
$629.99
The Valeo premium alternator delivers exceptional performance and reliability, making it a top choice for automotive electrical systems. Designed with 100% new components and core, this alternator eliminates the risk of premature failure, ensuring long-lasting durability compared to remanufactured units. With an impressive 150-amp output and 12 VDC voltage, it provides consistent power to meet demanding electrical needs. Premium rare earth magnets enhance efficiency by increasing output without enlarging the unit, while its high resistance to heat, vibration, and contaminants ensures maximum charge output under harsh conditions. Application-specific design guarantees an exact fit, and rigorous testing over six months confirms reliability in extreme environments. As the original equipment part now available in the aftermarket, this alternator combines innovation and quality, boosting fuel economy and eliminating voltage drops. Ideal for those seeking superior performance, Valeo’s alternator is a testament to advanced engineering and unmatched durability.
Product Features:
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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 439782 is the original equipment part now available in the aftermarket.
Valeo – Alternator: New (Part No.439938)
from
$799.99
As a pioneer in automotive electrical systems since 1923, Valeo delivers OE-quality alternators trusted by global vehicle manufacturers. Valeo alternators are 100% new never remanufactured and are engineered with premium rare earth magnets to enhance power output without increasing unit size. Each unit is tested for up to 1,000 hours in extreme thermal, vibration, and electrical Conditions to guarantee long-lasting reliability. Designed for seamless OE fitment, Valeo alternators help improve charging efficiency and reduce CO emissions, making them the ideal solution for both performance and sustainability.
Product Features:
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Product Features:
- 100% NEW PRODUCT – Valeo alternators are 100% new, not remanufactured, eliminating the risk of premature failure
- OE FIT – Application-specific design ensures exact fit and seamless integration with vehicle systems
- HIGH-EFFICIENCY OUTPUT – Premium rare earth magnets deliver higher charging power without increasing unit size
- EXTREME TESTING – Each alternator undergoes up to 1,000 hours of load and thermal cycle testing for proven durability
- BUILT TO LAST – Resistant to heat, vibration, and contaminants for long-term, reliable performance.
Product Features:
Bosch – Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (Part No.AL0803X)
from
$386.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 120-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for all your vehicle’s needs. Engineered with precision, it features full-load testing to meet Bosch’s stringent performance standards and is 100% factory tested for quality assurance. Unlike rebuilt units, this alternator is remanufactured using high-quality materials and cutting-edge technology, ensuring long-lasting durability. Its clockwise rotation direction and advanced design make it a dependable replacement part that stands up to demanding conditions. Choose Bosch for a premium alternator that combines superior craftsmanship with unmatched value.
Product Features:
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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 consistent 120-amp output to support a wide range of vehicle electrical demands.
Product Features:
WAI – Starter: 1.1kW/12 Volt, CW, 10-Tooth Pinion (Part No.33292N)
from
$193.99
Product Features:
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- Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
- Premium grade solenoids contains materials specifically selected for best conductivity. High temperature cap ensures that the solenoid works flawlessly in high heat environments. High dielectric strength outer case resists shorting.
- Armatures have precision machined and upgraded steel shaft for improved durability and performance.
- 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.
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.52062S)
from
$516.99
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.
Product Features:
See More
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
- 100% remanufactured drive clutch assembly ensures lasting performance
- Armatures and commutators are 100% load tested
- New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
- 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
Bosch – Starter: Remanufactured (Part No.SR0819X)
from
$232.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
Product Features:
See More
Product Features:
- Built for extremes! Our new and reman starters and alternators are 100% factory tested to ensure reliable performance, under extremes of heat, cold and high demand
- Our new and reman starters and alternators are designed to perform equal to or better than the original equipment parts, that they replace
- Our new and reman starters and alternators are designed to be identical in fit and performance to original equipment parts
- Our new and reman starters and alternators utilize the latest manufacturing technologies and highest quality parts to ensure the best performance and longest life
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.17407S)
from
$235.99
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 Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.17976S)
from
$215.99
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 Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.33292S)
from
$193.99
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
Bosch – Starter: Remanufactured (Part No.SR0422X)
from
$348.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
Product Features:
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Product Features:
- Built for extremes! Our new and reman starters and alternators are 100% factory tested to ensure reliable performance, under extremes of heat, cold and high demand
- Our new and reman starters and alternators are designed to perform equal to or better than the original equipment parts, that they replace
- Our new and reman starters and alternators are designed to be identical in fit and performance to original equipment parts
- Our new and reman starters and alternators utilize the latest manufacturing technologies and highest quality parts to ensure the best performance and longest life
Carquest Premium – Voltage Regulator (Part No.RAA1104)
from
$196.99
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:
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Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – Voltage Regulator (Part No.RAA1174)
from
$127.99
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:
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Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – Voltage Regulator (Part No.RAC1026)
from
$116.99
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:
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Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – Voltage Regulator (Part No.RAA1192)
from
$258.99
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:
See More
Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – Voltage Regulator (Part No.RAA3356)
from
$539.99
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:
See More
Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – New Voltage Regulator (Part No.RAE1095)
from
$99.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications.
Product Features:
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Product Features:
- CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
- CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
- CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
- CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
Carquest Premium – Ignition Lock Cylinder (Part No.CSC2255)
from
$299.99
The Ignition switch is the main power switched distribution point in every vehicle. The ignition switch in some manner will be connected directly to the vehicle battery and then supply power out to every operating system in the vehicle that is required to be connected and disconnected from the vehicle’s battery or power source.
Product Features:
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Product Features:
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure confidence and product reliability, every time.
Carquest Premium – Ignition Lock Cylinder (Part No.CSC3094)
from
$207.99
The Ignition switch is the main power switched distribution point in every vehicle. The ignition switch in some manner will be connected directly to the vehicle battery and then supply power out to every operating system in the vehicle that is required to be connected and disconnected from the vehicle’s battery or power source.
Product Features:
See More
Product Features:
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure confidence and product reliability, every time.
Upgrade your 2003 Audi A6 with Top-Quality Alternators and Starters
When it comes to maintaining or upgrading your 2003 Audi A6, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Audi or enhancing its overall performance, Alternators and Starters are key to keeping your A6 functioning at its best. At Advance Auto Parts, we offer a wide selection of 11 Alternators and Starters for the 2003 Audi A6, designed to meet your needs without breaking the bank.
From
Starter Part
replacements to
Alternator 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 2003 Audi A6 at great prices.
Our Alternators and Starters inventory for this model
ranges from just $99.99 to $564.99, with
an average price of $331.99.
Our 11 Alternators and Starters in stock come from 4 trusted brands, so you’re sure to find the right part for your 2003 Audi A6 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 2003 Audi A6 is always ready to roll. We’re committed to providing you with everything you need to keep your A6 in top shape, all in one place.
Start shopping confidently below for your 2003 Audi A6!
Best-Selling Starter Parts for 2003 Audi A6s
Enhance the driving experience in your Audi with 3 quality Starter Part components, starting at $269.99.
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.17778S)
from
$269.99
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.
Product Features:
See More
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
- 100% remanufactured drive clutch assembly ensures lasting performance
- Armatures and commutators are 100% load tested
- New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
- 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
WAI – Starter: 1.4kW/12 Volt, CW, 9-Tooth Pinion (Part No.17778N)
from
$295.99
Product Features:
See More
- Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
- Premium grade solenoids contains materials specifically selected for best conductivity. High temperature cap ensures that the solenoid works flawlessly in high heat environments. High dielectric strength outer case resists shorting.
- Armatures have precision machined and upgraded steel shaft for improved durability and performance.
- 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.
Bosch – Starter: Remanufactured (Part No.SR0422X)
from
$348.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
Product Features:
See More
Product Features:
- Built for extremes! Our new and reman starters and alternators are 100% factory tested to ensure reliable performance, under extremes of heat, cold and high demand
- Our new and reman starters and alternators are designed to perform equal to or better than the original equipment parts, that they replace
- Our new and reman starters and alternators are designed to be identical in fit and performance to original equipment parts
- Our new and reman starters and alternators utilize the latest manufacturing technologies and highest quality parts to ensure the best performance and longest life
Most Popular 2003 Audi A6 Alternator Parts
Customize your Audi with 4 Alternator Parts products
like Alternators, all
priced under $564.99.
Bosch – Alternator: New, 150 Amps (Part No.AL0831N)
from
$564.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With an impressive 150-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 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 high-quality construction with dependable functionality.
Product Features:
See More
Product Features:
- Provides a robust 150-amp amperage rating to meet the high electrical demands of modern vehicles.
- Delivers a consistent 14 VDC voltage output for reliable power supply to essential vehicle systems.
- Engineered with premium materials for enhanced durability and long-lasting performance.
- Designed for clockwise rotation to ensure seamless integration and smooth operation in compatible systems.
- Rigorously tested for reliability, reducing the need for frequent replacements and offering exceptional value.
Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0831X)
from
$334.99
The Bosch Premium Alternator, delivering 150 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, offering superior durability and longevity. Designed with a clockwise rotation direction, it is built to seamlessly integrate with your vehicle’s electrical system. Whether you’re replacing a worn-out alternator or upgrading for enhanced performance, this Bosch alternator provides the power and dependability you need to keep your vehicle running smoothly.
Product Features:
See More
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 with your vehicle’s electrical system, ensuring optimal compatibility and performance.
- Designed with a clockwise rotation direction to enhance operational efficiency and reliability.
Valeo – Alternator: New, 150 Amps (Part No.439574)
from
$329.99
The Valeo premium alternator, boasting a robust 150-amp output and 12 VDC voltage, is engineered for superior performance and reliability. As a 100% new product, it eliminates the risks associated with remanufactured units, ensuring long-lasting durability. Designed with premium rare earth magnets, this alternator delivers enhanced efficiency without increasing its size, making it ideal for modern vehicles. Its application-specific design guarantees an exact fit, while rigorous testing under extreme conditions for up to six months ensures reliability in the harshest environments. With high resistance to heat, vibration, and contaminants, it maintains maximum charge output even under demanding electrical loads. The clockwise rotation direction and original equipment part number 439574 make it a perfect aftermarket replacement for seamless compatibility. Recognized for innovation, Valeo alternators improve fuel economy and eliminate voltage drops, offering exceptional value for drivers seeking dependable performance.
Product Features:
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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 439574 is the original equipment part now available in the aftermarket.
WAI – Bosch Ir/If 150 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.11065N)
from
$307.99
This 150-amp alternator from WAI is engineered to deliver exceptional performance and reliability, making it a top choice for aftermarket replacements. Designed to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. The advanced voltage regulator protection safeguards against transient voltage spikes, preventing potential battery damage, while its low saturation voltage minimizes heat dissipation for enhanced durability. Featuring a high-power rectifier assembly with open junction press-fit diodes, this alternator is built to run cooler and more efficiently. Each unit is rigorously tested, and a printed copy of the test results is included, giving you confidence in its performance from the moment it powers on. With WAI’s commitment to quality, this alternator offers long-lasting value and dependable operation for your vehicle.
Product Features:
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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 for enhanced durability, this alternator features advanced engineering that minimizes heat dissipation, ensuring reliable and long-lasting performance under demanding conditions.
Top Picks for 2003 Audi A6 Voltage Regulator Parts
Upgrade Audi A6s with top-quality Voltage Regulator Parts parts, including 3 OEM and aftermarket selections for your 2003 model.
Carquest Premium – Voltage Regulator (Part No.RAA3356)
from
$539.99
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:
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Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – Voltage Regulator (Part No.RAA1192)
from
$258.99
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:
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Product Features:
- Application matched components ensure the charging system can be returned to like new condition.
Carquest Premium – New Voltage Regulator (Part No.RAE1095)
from
$99.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications.
Product Features:
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Product Features:
- CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
- CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
- CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
- CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
In-Demand Ignition Lock Parts for 2003 Audi A6s
Select from 1 premium Ignition Lock Parts parts for your 2003 Audi A6.
Carquest Premium – Ignition Lock Cylinder (Part No.CSC2255)
from
$299.99
The Ignition switch is the main power switched distribution point in every vehicle. The ignition switch in some manner will be connected directly to the vehicle battery and then supply power out to every operating system in the vehicle that is required to be connected and disconnected from the vehicle’s battery or power source.
Product Features:
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Product Features:
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure confidence and product reliability, every time.
FAQs for 2003 Audi A6 Alternators and Starters
Which Alternators and Starters are best-sellers for 2003 Audi A6s?
Out of 11 Alternators and Starters that fit 2003 Audi A6s, the following parts are the top sellers:
- Starter: 1.4kW/12 Volt, CW, 9-Tooth Pinion (12161579) – $295.99
- Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (26942473) – $334.99
- Alternator: New, 150 Amps (10557099) – $329.99
What’s the price range for 2003 Audi A6 Alternators and Starters?
Alternators and Starter prices for the 2003 Audi A6 start at $99.99 and go up to $564.99 for the most premium parts.
What’s the average price of a Alternators and Starter for a 2003 Audi A6?
The average price for Alternators and Starters for the 2003 Audi A6 is $331.99. 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 Audi A6 model years?
What are the cheapest Alternators and Starters for my 2003 Audi A6?
The cheapest 2003 Audi A6 Alternators and Starters we carry in stock are:
- New Voltage Regulator (12450447) – $99.99
- Voltage Regulator (12521122) – $258.99
- Starter: Remanufactured, Limited Lifetime Warranty (15840036) – $269.99
- Starter: 1.4kW/12 Volt, CW, 9-Tooth Pinion (12161579) – $295.99
- Ignition Lock Cylinder (12497943) – $299.99
What are the top-rated Alternators and Starters that fit the 2003 Audi A6?
Out of 4 reviews by customers, our 2003 Audi A6 Alternators and Starters have an average customer rating of . These are some of the highest-rated Alternators and Starter types for the 2003 Audi A6 and their top-rated products:
- Starter Parts
- Starter: Remanufactured, Limited Lifetime Warranty (15840036) – $269.99
What types of Alternators and Starters do you sell for my 2003 Audi A6?
As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2003 Audi A6:
Can I get help with 2003 Audi A6 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 Audi Alternators and Starters and more.
What is your return policy for Audi A6 Alternators and Starters?
Advance Auto Parts keeps returns simple. For new Audi A6 Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
