2003 Audi A6 Quattro Alternators and Starters
Find Your Specific 2003 Audi A6 Quattro Alternators and Starters
Below you will find various in-demand Audi Alternators and Starters, components and accessories for your 2003 A6 Quattro. Advance Auto Parts has popular A6 Quattro parts like Starter Parts, Alternator Parts, Ignition Lock Parts and more. You’ll also find aftermarket and OEM Alternators and Starters for other A6 Quattro model years including
2015,
2016,
2017,
2018,
2019,
2020,
2021,
2022,
2023 and more. Select a category of 2003 Audi A6 Quattro Alternators and Starters below and start saving instantly.
Popular 2003 Audi A6 Quattro Alternators and Starters Categories
Essential Alternators and Starters for 2003 Audi A6 Quattros
Valeo – Alternator: New, 180 Amps (Part No.439800)
from
$664.99
Valeo’s premium alternator, boasting a robust 180-amp output and 12 VDC voltage, is engineered for exceptional performance and reliability. Crafted entirely from 100% new components, this alternator eliminates the risk of premature failure often associated with remanufactured units, ensuring long-lasting durability. Designed with application-specific parts for a precise fit, it incorporates premium rare earth magnets to maximize efficiency without increasing size. Rigorous testing under extreme conditions for up to six months guarantees reliability even in the harshest environments, with high resistance to heat, vibration, and contaminants maintaining optimal charge output. As an original equipment part now available in the aftermarket, this alternator is a testament to Valeo’s innovation and expertise in electrical systems since 1923. Perfect for demanding electrical needs, it delivers superior performance while boosting fuel economy, making it a valuable upgrade for your vehicle.
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 439800 is the original equipment part now available in the aftermarket.
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.
WAI – Bosch Ir/If 120 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13922N)
from
$268.99
This 120-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, equipped with open junction press-fit diodes, keeps 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 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:
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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.
- Designed for enhanced durability, the alternator’s low saturation voltage minimizes heat dissipation, ensuring long-lasting efficiency even under demanding conditions.
Bosch – Alternator: Remanufactured, 180 Amps, 2 Year Limited Warranty (Part No.AL9452X)
from
$532.99
The Bosch Premium Alternator, delivering a robust 180-amp output at 12 VDC, is engineered for exceptional performance and reliability. Designed with precision, it undergoes full-load testing to meet Bosch’s stringent performance standards, ensuring dependable operation in demanding conditions. Unlike rebuilt units, this alternator is 100% factory-tested and remanufactured using high-quality materials and cutting-edge technology, offering superior durability and longevity. Its clockwise rotation direction and advanced construction make it a reliable choice for maintaining your vehicle’s electrical system. Built to last, this alternator provides excellent value by combining premium craftsmanship with trusted performance.
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.
- Precision-designed clockwise rotation enhances compatibility and efficiency within the vehicle’s electrical system.
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 – Starter Solenoid (Part No.SBC2436)
from
$107.99
The starting system consists of the rotating electrical motor and solenoid which may be mounted on the starter motor or mounted remotely. The electric motor drives a gear which engages with the engine’s flywheel located at the rear of the motor, when the motor is energized, the motor will turn the engines crankshaft. The starter solenoid is an electric relay, or switch used to provide power to the starter motor or any electrical device that requires high amperage to operate. A low amperage wire winding within the solenoid will create magnetic force when voltage is applies from a remote switch, such as the ignition switch or another type of remote mounted switch. The contacts within the relay carry a high amperage load to run an electric motor or some other type of high load circuit.
Product Features:
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Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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.RAA3357)
from
$397.99
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.RAC3664)
from
$635.99
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:
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:
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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.
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.
Bosch – Starter (Part No.SR0788N)
from
$627.99
The Bosch Premium starter is engineered to deliver exceptional performance and reliability, making it a trusted choice for your vehicle’s ignition system. Designed with a closed nose for enhanced durability, this starter ensures long-lasting operation even under demanding conditions. It features a clockwise (right) rotation and a 9-tooth configuration, providing precise engagement and smooth operation. Operating at 12 VDC, it offers consistent power to get your engine running efficiently every time. Built and tested to meet the highest standards, this starter is a dependable solution for maintaining your vehicle’s performance.
Product Features:
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Product Features:
- Engineered for exceptional performance and reliability, ensuring consistent ignition system operation.
- Closed nose design enhances durability, providing long-lasting functionality under demanding conditions.
- Clockwise (right) rotation and 9-tooth configuration deliver precise engagement and smooth operation.
- Operates at 12 VDC, offering consistent power for efficient engine starts.
- Built and tested to meet high standards, ensuring dependable vehicle performance.
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:
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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
- 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
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.
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.19113S)
from
$304.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
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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.
WAI – Starter: 1.4kW/12 Volt, CW, 10-Tooth Pinion (Part No.17692N)
from
$219.99
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.17887S)
from
$326.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
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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:
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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.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.
Upgrade your 2003 Audi A6 Quattro with Top-Quality Alternators and Starters
When it comes to maintaining or upgrading your 2003 Audi A6 Quattro, 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 Quattro functioning at its best. At Advance Auto Parts, we offer a wide selection of 21 Alternators and Starters for the 2003 Audi A6 Quattro, 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 Quattro at great prices.
Our Alternators and Starters inventory for this model
ranges from just $99.99 to $564.99, with
an average price of $318.99.
Our 21 Alternators and Starters in stock come from 4 trusted brands, so you’re sure to find the right part for your 2003 Audi A6 Quattro 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 Quattro is always ready to roll. We’re committed to providing you with everything you need to keep your A6 Quattro in top shape, all in one place.
Start shopping confidently below for your 2003 Audi A6 Quattro!
Best-Selling Starter Parts for 2003 Audi A6 Quattros
Enhance the driving experience in your Audi with 5 quality Starter Part components, starting at $107.99.
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:
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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
- 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.
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.17752S)
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
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 – Starter Solenoid (Part No.SBC2436)
from
$107.99
The starting system consists of the rotating electrical motor and solenoid which may be mounted on the starter motor or mounted remotely. The electric motor drives a gear which engages with the engine’s flywheel located at the rear of the motor, when the motor is energized, the motor will turn the engines crankshaft. The starter solenoid is an electric relay, or switch used to provide power to the starter motor or any electrical device that requires high amperage to operate. A low amperage wire winding within the solenoid will create magnetic force when voltage is applies from a remote switch, such as the ignition switch or another type of remote mounted switch. The contacts within the relay carry a high amperage load to run an electric motor or some other type of high load circuit.
Product Features:
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Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Most Popular 2003 Audi A6 Quattro Alternator Parts
Customize your Audi with 10 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:
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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.
Bosch – Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (Part No.AL0727X)
from
$411.99
The Bosch Premium Alternator, delivering 120 amps and operating at 12 VDC with a clockwise rotation, is engineered for peak performance and reliability. This remanufactured unit undergoes 100% factory testing and full-load evaluations to meet Bosch’s stringent performance standards, ensuring dependable operation in demanding conditions. Built with high-quality materials and advanced technology, it offers exceptional durability and long-lasting performance. Whether you’re replacing a worn-out alternator or upgrading for better efficiency, this alternator is designed to keep your vehicle’s electrical system running smoothly. Trust Bosch for a premium solution that combines precision engineering with unmatched reliability.
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.
- Designed to ensure smooth and efficient operation of your vehicle’s electrical system, even under demanding conditions.
- Engineered with precision to deliver consistent 120-amp output for reliable performance and enhanced efficiency.
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.
Valeo – Alternator: 120 Amps (Part No.439263)
from
$354.99
The 120 Amp Valeo alternator is a premium solution designed to deliver exceptional performance and reliability. Built with 100% new components and core, it eliminates the risk of premature failure, offering superior durability compared to remanufactured units. Engineered with application-specific parts for an exact fit, this alternator ensures seamless integration into your vehicle’s electrical system. Featuring premium rare earth magnets, it maximizes output efficiency without increasing size, making it a compact yet powerful choice. Tested under extreme conditions for up to six months, it guarantees reliability even in the harshest environments, with high resistance to heat, vibration, and contaminants. With a 12 VDC voltage rating, 120 Amp output, and clockwise rotation, this original equipment part (Part Number 439263) is now available in the aftermarket, providing the same trusted quality as factory-installed components. Ideal for maintaining maximum charge output, this Valeo alternator is a smart investment for enhanced fuel economy and long-lasting 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 439263 is the original equipment part now available in the aftermarket.
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.
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.
Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11108A)
from
$287.99
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
WAI – Bosch Ir/If 120 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13922N)
from
$268.99
This 120-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, equipped with open junction press-fit diodes, keeps 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 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:
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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.
- Designed for enhanced durability, the alternator’s low saturation voltage minimizes heat dissipation, ensuring long-lasting efficiency even under demanding conditions.
WAI – Valeo Ir/If 120 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13932N)
from
$254.99
This 120-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 comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. With WAI’s commitment to quality, this alternator offers long-lasting value and dependable power 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.
- Designed for enhanced durability, the alternator’s advanced construction minimizes heat dissipation, ensuring reliable performance and long-lasting value.
Top Picks for 2003 Audi A6 Quattro Ignition Lock Parts
Upgrade Audi A6 Quattros with top-quality Ignition Lock Parts parts, including 1 OEM and aftermarket selections for your 2003 model.
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.
In-Demand Voltage Regulator Parts for 2003 Audi A6 Quattros
Select from 5 premium Voltage Regulator Parts parts for your 2003 Audi A6 Quattro, with prices ranging from $99.99 to $539.99.
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.RAA3357)
from
$397.99
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 – 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 – 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.
FAQs for 2003 Audi A6 Quattro Alternators and Starters
Which Alternators and Starters are best-sellers for 2003 Audi A6 Quattros?
Out of 21 Alternators and Starters that fit 2003 Audi A6 Quattros, the following parts are the top sellers:
- Starter: Remanufactured, Limited Lifetime Warranty (19840047) – $235.99
- Starter: 1.4kW/12 Volt, CW, 9-Tooth Pinion (12161579) – $295.99
- Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (16070180) – $386.99
What’s the price range for 2003 Audi A6 Quattro Alternators and Starters?
Alternators and Starter prices for the 2003 Audi A6 Quattro 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 Quattro?
The average price for Alternators and Starters for the 2003 Audi A6 Quattro is $318.99. 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 Quattro model years?
What are the cheapest Alternators and Starters for my 2003 Audi A6 Quattro?
The cheapest 2003 Audi A6 Quattro Alternators and Starters we carry in stock are:
- New Voltage Regulator (12450447) – $99.99
- Starter Solenoid (12497313) – $107.99
- Voltage Regulator (12521228) – $196.99
- Starter: Remanufactured, Limited Lifetime Warranty (19840047) – $235.99
- Valeo Ir/If 120 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (12182713) – $254.99
What are the top-rated Alternators and Starters that fit the 2003 Audi A6 Quattro?
Out of 12 reviews by customers, our 2003 Audi A6 Quattro 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 Quattro 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 Quattro?
As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2003 Audi A6 Quattro:
Can I get help with 2003 Audi A6 Quattro 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 Quattro Alternators and Starters?
Advance Auto Parts keeps returns simple. For new Audi A6 Quattro Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
