2003 Porsche 911 Alternators and Starters
Find Your Specific 2003 Porsche 911 Alternators and Starters
Below you will find various in-demand Porsche Alternators and Starters, components and accessories for your 2003 911. Advance Auto Parts has popular 911 parts like Alternator Pulley Parts, Starter Parts, Alternator Parts and more. You’ll also find aftermarket and OEM Alternators and Starters for other 911 model years including
2011,
2012,
2013,
2014,
2015,
2016,
2017,
2018,
2019 and more. Select a category of 2003 Porsche 911 Alternators and Starters below and start saving instantly.
Popular 2003 Porsche 911 Alternators and Starters Categories
Essential Alternators and Starters for 2003 Porsche 911s
Carquest Premium – Multi-Purpose Relay (Part No.RAA1933)
from
$55.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Carquest Premium – Multi-Purpose Relay (Part No.RAA2456)
from
$32.49
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Litens – Overrunning Alternator Pulley (OAP) Pulley – Original Equipment Quality (Part No.930004A)
from
$75.99
This Litens supplied OAP is manufactured by the original equipment (O.E.) manufacturer. This replacement pulley is exact in all form, fit, and performance characteristics as the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). Under rapid engine deceleration, the pulley disengages the alternator from the belt drive system, allowing the alternator to freewheel, re-engaging when the RPM increases. The OAP alternator pulley ensures smooth, quiet performance. The OAP is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component. Under normal driving conditions, the original pulley will require replacement in approximately 70,000 – 90,000 miles. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More
WAI – Starter: 1.7kW/12 Volt, CW, 9-Tooth Pinion (Part No.17804N)
from
$261.99
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 (Part No.17607S)
from
$467.99
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.SR17X)
from
$145.99
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.52031S)
from
$442.99
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.17281S)
from
$177.99
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.17813S)
from
$224.99
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.16300S)
from
$110.99
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.SR0430X)
from
$286.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
Product Features:
See More
Product Features:
- 100% exhaustive multipoint quality and performance testing ensures cranking and starting performance under virtually all temperature extremes
- 100% replacement of all bearings/bushings with new high-quality friction-reducing components provides balanced high-speed torque for maximum performance and dependability
- Armature/commutator is remachined to tough concentricity standards to help increase brush life and maximize starting power
- Solenoids include 100% new high-temperature caps, contacts, copper windings and terminal hardware which results in less battery draw which thus results in faster starts with maximum voltage
INA US – ALT DECOUPLER PULLEY (Part No.EA0025)
from
$62.99
ALT DECOUPLER PULLEY
Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0898X)
from
$783.99
The Bosch Premium Alternator, delivering 150 amps at 12 VDC, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures dependable operation under demanding conditions. Unlike rebuilt units, it is 100% factory-tested and remanufactured using high-quality materials and cutting-edge technology, guaranteeing long-lasting durability. Designed with a clockwise rotation direction, it is built to seamlessly integrate into your vehicle’s electrical system. Whether you’re replacing a worn-out alternator or upgrading for better performance, this premium unit offers unmatched value and peace of mind.
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.
- Seamlessly integrates with your vehicle’s electrical system for optimal compatibility and performance.
- Engineered for dependable operation under demanding conditions, ensuring reliability and peace of mind.
Product Features:
WAI – Bosch Ir/If 120 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13810N)
from
$273.99
Alternator: New, 120 Amps by WAI delivers exceptional performance and reliability, engineered to meet or exceed OEM specifications for a seamless fit and hassle-free installation. Designed with advanced voltage regulator protection, it safeguards against transient voltage spikes to prevent battery damage while ensuring efficient communication with the ECU. Its high-power rectifier assembly features open junction press-fit diodes, promoting cooler operation and enhanced durability. The low saturation voltage minimizes heat dissipation, further boosting its longevity. Each unit comes with a printed copy of test results, providing transparency and confidence in its quality from the moment it powers on. With 120 amps of power, this alternator is built to handle demanding electrical loads, making it a dependable choice for your vehicle’s needs.
Product Features:
See More
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 to handle demanding electrical loads with 120 amps of power, ensuring reliable performance for vehicles with high energy requirements.
Valeo – Alternator: New, 50 Amps (Part No.101822)
from
$349.99
The Valeo premium alternator, designed with 50 Amps and 12 VDC output, is a top-tier solution for reliable electrical performance. Built entirely new – not remanufactured – this alternator eliminates the risk of premature failure, ensuring long-lasting durability. Featuring premium rare earth magnets, it delivers enhanced efficiency without increasing size, making it ideal for modern vehicles. Engineered for exact fit with application-specific components, it guarantees seamless installation and compatibility. Rigorous testing under extreme conditions for up to six months ensures its reliability in the harshest environments, including resistance to heat, vibration, and contaminants. With a clockwise rotation direction and original equipment quality, this Valeo alternator is now available in the aftermarket as Part Number 101822, offering unmatched value and performance.
Product Features:
See More
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 101822 is the original equipment part now available in the aftermarket.
Bosch – Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (Part No.AL0812X)
from
$428.99
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 service life. Whether you’re replacing a worn-out alternator or upgrading for better performance, this alternator is designed to handle the job with ease. Trust Bosch’s expertise for a reliable power source that keeps 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.
- Designed for demanding conditions, ensuring reliable operation and consistent performance in various environments.
- Offers exceptional durability and long-lasting service life, making it a dependable choice for vehicle power needs.
Product Features:
Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0815X)
from
$398.99
The Bosch Premium Alternator, remanufactured to deliver 150 amps of power at 12 VDC, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent operation under demanding conditions. Unlike rebuilt units, it is 100% factory tested and remanufactured using high-quality materials and advanced technology, guaranteeing long-lasting durability. 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 better performance, this premium unit offers unmatched value and dependability for your automotive needs.
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 match specific vehicle requirements for efficient operation.
Product Features:
Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0852X)
from
$402.99
The Bosch Premium Alternator, delivering 150 amps at 12 VDC, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures dependable operation under demanding conditions. Unlike rebuilt units, it is 100% factory-tested and remanufactured using high-quality materials and cutting-edge technology, guaranteeing long-lasting durability. Designed with a clockwise rotation direction, it is built to seamlessly integrate into your vehicle’s electrical system. Whether you’re replacing a worn-out alternator or upgrading for better performance, this Bosch alternator offers unmatched value and peace of mind.
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.
- Seamlessly integrates with your vehicle’s electrical system for optimal compatibility and performance.
- Engineered for dependable operation under demanding conditions, ensuring reliability when you need it most.
Product Features:
Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11131A)
from
$304.99
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: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0882X)
from
$783.99
The Bosch Premium Alternator, remanufactured to deliver 150 amps of power, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent operation under demanding conditions. With a 12 VDC voltage rating and clockwise rotation direction, it is designed to integrate seamlessly into your vehicle’s electrical system. Unlike rebuilt units, these alternators are 100% factory tested and remanufactured using high-quality materials and advanced technology, ensuring durability and long-lasting performance. Whether you’re replacing a worn-out alternator or upgrading for better efficiency, this premium component offers unmatched value and dependability for your vehicle.
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.
- Seamless integration into your vehicle’s electrical system with a 12 VDC voltage rating and clockwise rotation direction.
- Engineered for demanding conditions, delivering consistent and reliable performance with a robust 150-amp power output.
Product Features:
Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11339A)
from
$307.99
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: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0869X)
from
$459.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding automotive needs. With a robust 150-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for your vehicle’s electrical systems. Engineered with high-quality materials and cutting-edge technology, it is built to last and withstand rigorous use. Its clockwise rotation direction and remanufactured design guarantee compliance with Bosch’s strict performance standards, offering a dependable solution without compromising quality. Each unit undergoes full-load and 100% factory testing to ensure optimal functionality, providing peace of mind and long-term value.
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.
- Delivers consistent 150-amp output to support demanding vehicle electrical systems effectively.
- Engineered for rigorous use, ensuring long-term reliability and durability in challenging conditions.
Product Features:
Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11470A)
from
$387.99
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: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL0887X)
from
$572.99
The Bosch Premium Alternator, remanufactured to deliver 150 amps of power at 12 VDC, is engineered for exceptional performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent operation under demanding conditions. Unlike rebuilt units, it is 100% factory tested and remanufactured using high-quality materials and advanced technological developments, making it a durable and dependable choice for your vehicle. Designed with a clockwise rotation direction, it seamlessly integrates into compatible systems, providing efficient energy output for your electrical needs. Whether you’re replacing a worn-out alternator or upgrading for better performance, this Bosch unit offers unmatched value and longevity.
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 compatible systems, ensuring efficient energy output and reliable performance.
- Designed with a clockwise rotation direction to optimize compatibility and operational efficiency.
Product Features:
Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11130A)
from
$348.99
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:
Carquest Premium – Alternator: Remanufactured, 90 Amps, Limited Lifetime Warranty (Part No.14892A)
from
$265.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
Product Features:
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.AL0898N)
from
$643.99
The Bosch Premium Alternator, delivering a robust 150-amp output and 14 VDC, is engineered for exceptional performance and reliability. Designed with precision, it ensures consistent power delivery to meet the demands of modern vehicles. Its clockwise rotation direction guarantees compatibility with a wide range of applications, making it a dependable choice for your vehicle’s electrical system. Built to Bosch’s high standards, this alternator is rigorously tested to withstand the toughest conditions, ensuring long-lasting durability and peace of mind. Whether you’re upgrading or replacing, this alternator offers premium quality and dependable functionality, making it a valuable investment for your vehicle’s performance.
Product Features:
See More
Product Features:
- Delivers a powerful 150-amp output to support the electrical demands of modern vehicles.
- Engineered with precision to ensure consistent and reliable power delivery for optimal vehicle performance.
- Clockwise rotation design enhances compatibility with a wide range of vehicle applications.
- Rigorously tested to withstand tough conditions, ensuring long-lasting durability and reliability.
- Built to Bosch’s high standards, offering premium quality and dependable functionality for peace of mind.
Product Features:
Bosch – Alternator: New, 150 Amps (Part No.AL0887N)
from
$522.99
The Bosch Premium Alternator, delivering a robust 150-amp output and operating at 14 VDC, is engineered for exceptional performance and reliability. Designed with precision and built to last, this alternator ensures consistent power delivery to meet the demands of modern vehicles. Its clockwise rotation direction guarantees compatibility with a wide range of applications, making it a dependable choice for your vehicle’s electrical system. Whether you’re powering advanced electronics or ensuring a steady charge to your battery, this alternator is built to handle the load with ease. Trust Bosch’s commitment to quality and durability to keep your vehicle running smoothly for the long haul.
Product Features:
See More
Product Features:
- Delivers a robust 150-amp output to efficiently meet the power demands of modern vehicles.
- Operates at 14 VDC to ensure consistent and reliable electrical performance.
- Precision-engineered for durability and long-lasting operation in demanding conditions.
- Clockwise rotation direction ensures compatibility with a wide range of vehicle applications.
- Designed to provide steady power delivery for advanced electronics and battery charging needs.
Product Features:
Upgrade your 2003 Porsche 911 with Top-Quality Alternators and Starters
When it comes to maintaining or upgrading your 2003 Porsche 911, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Porsche or enhancing its overall performance, Alternators and Starters are key to keeping your 911 functioning at its best. At Advance Auto Parts, we offer a wide selection of 8 Alternators and Starters for the 2003 Porsche 911, designed to meet your needs without breaking the bank.
From
Alternator Pulley Part
replacements to
Starter Parts
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Alternators and Starters for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Alternators and Starters for your 2003 Porsche 911 at great prices.
Our Alternators and Starters inventory for this model
ranges from just $32.49 to $428.99, with
an average price of $210.69.
Our 8 Alternators and Starters in stock come from 5 trusted brands, so you’re sure to find the right part for your 2003 Porsche 911 without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 Porsche 911, we stock popular OEM and aftermarket Alternators and Starters from top names
like Bosch, and more.
Bosch Alternators and Starters
start at just $428.99 and boast an impressive 4.7 stars average rating from customers.
With 5 customer reviews and counting, our 2003 Porsche 911 Alternators and Starters have a strong track record of reliability, ensuring you can trust your purchase.
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 Porsche 911 is always ready to roll. We’re committed to providing you with everything you need to keep your 911 in top shape, all in one place.
Start shopping confidently below for your 2003 Porsche 911!
Best-Selling Alternator Pulley Parts for 2003 Porsche 911s
Enhance the driving experience in your Porsche with 2 quality Alternator Pulley Part components, starting at $62.99.
Litens – Overrunning Alternator Pulley (OAP) Pulley – Original Equipment Quality (Part No.930004A)
from
$75.99
This Litens supplied OAP is manufactured by the original equipment (O.E.) manufacturer. This replacement pulley is exact in all form, fit, and performance characteristics as the original equipment part (with the exception of not having the car manufacturer’s logo or part number applied to the part). Under rapid engine deceleration, the pulley disengages the alternator from the belt drive system, allowing the alternator to freewheel, re-engaging when the RPM increases. The OAP alternator pulley ensures smooth, quiet performance. The OAP is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component. Under normal driving conditions, the original pulley will require replacement in approximately 70,000 – 90,000 miles. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.
See More
INA US – ALT DECOUPLER PULLEY (Part No.EA0025)
from
$62.99
ALT DECOUPLER PULLEY
Most Popular 2003 Porsche 911 Starter Parts
Customize your Porsche with 4 Starter Parts products
like Starters and
Starter Relays, all
priced under $286.99.
Bosch – Starter: Remanufactured (Part No.SR0430X)
from
$286.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
Product Features:
See More
Product Features:
- 100% exhaustive multipoint quality and performance testing ensures cranking and starting performance under virtually all temperature extremes
- 100% replacement of all bearings/bushings with new high-quality friction-reducing components provides balanced high-speed torque for maximum performance and dependability
- Armature/commutator is remachined to tough concentricity standards to help increase brush life and maximize starting power
- Solenoids include 100% new high-temperature caps, contacts, copper windings and terminal hardware which results in less battery draw which thus results in faster starts with maximum voltage
WAI – Starter: 1.7kW/12 Volt, CW, 9-Tooth Pinion (Part No.17804N)
from
$261.99
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.17813S)
from
$224.99
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 – Multi-Purpose Relay (Part No.RAA2456)
from
$32.49
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Top Picks for 2003 Porsche 911 Alternator Parts
Upgrade Porsche 911s with top-quality Alternator Parts parts, including 2 OEM and aftermarket selections for your 2003 model.
Bosch – Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (Part No.AL0812X)
from
$428.99
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 service life. Whether you’re replacing a worn-out alternator or upgrading for better performance, this alternator is designed to handle the job with ease. Trust Bosch’s expertise for a reliable power source that keeps 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.
- Designed for demanding conditions, ensuring reliable operation and consistent performance in various environments.
- Offers exceptional durability and long-lasting service life, making it a dependable choice for vehicle power needs.
WAI – Bosch Ir/If 120 Amp/12 Volt, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.13810N)
from
$273.99
Alternator: New, 120 Amps by WAI delivers exceptional performance and reliability, engineered to meet or exceed OEM specifications for a seamless fit and hassle-free installation. Designed with advanced voltage regulator protection, it safeguards against transient voltage spikes to prevent battery damage while ensuring efficient communication with the ECU. Its high-power rectifier assembly features open junction press-fit diodes, promoting cooler operation and enhanced durability. The low saturation voltage minimizes heat dissipation, further boosting its longevity. Each unit comes with a printed copy of test results, providing transparency and confidence in its quality from the moment it powers on. With 120 amps of power, this alternator is built to handle demanding electrical loads, making it a dependable choice for your vehicle’s needs.
Product Features:
See More
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 to handle demanding electrical loads with 120 amps of power, ensuring reliable performance for vehicles with high energy requirements.
Top-Rated Alternators and Starters Brands For Your 2003 Porsche 911
Shop for the best-rated brands offering Alternators and Starters and other products for your 2003 Porsche 911s. Below you’ll find some of our best rated Alternators and Starters from Bosch, and more. Alternators and Starters from these brands that fit a 2003 911 start at just $428.99 and are rated as high as 4.7 stars. OEM and aftermarket Alternators and Starters don’t get more top quality, durable, and affordable than from the brands below.
Popular Bosch 2003 Porsche 911 Alternators and Starters
When it comes to maintaining or upgrading your 2003 Porsche 911, using quality Alternators and Starters is essential to ensure durability and a perfect fit. Bosch ticks all of those boxes. We offer a wide selection of Bosch Alternators and Starters, specifically designed for the 2003 Porsche 911. With over 1 Bosch brand Alternators and Starters in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $428.99. Plus, with over 1 customer reviews and an average rating of 4.7 stars, you can trust that our Bosch Alternators and Starters will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
from
$428.99
(1)
Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty
“Product looked brand new and installed easily. Much less expensive than the Porsche dealer or local shops offered.”
FAQs for 2003 Porsche 911 Alternators and Starters
Which Alternators and Starters are best-sellers for 2003 Porsche 911s?
Out of 8 Alternators and Starters that fit 2003 Porsche 911s, the following parts are the top sellers:
- Starter: Remanufactured (26943864) – $286.99
- Overrunning Alternator Pulley (OAP) Pulley – Original Equipment Quality (10457877) – $75.99
- Starter: Remanufactured, Limited Lifetime Warranty (10973282) – $224.99
What’s the price range for 2003 Porsche 911 Alternators and Starters?
Alternators and Starter prices for the 2003 Porsche 911 start at $32.49 and go up to $428.99 for the most premium parts.
What’s the average price of a Alternators and Starter for a 2003 Porsche 911?
The average price for Alternators and Starters for the 2003 Porsche 911 is $210.69. 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 Porsche 911 model years?
What are the cheapest Alternators and Starters for my 2003 Porsche 911?
The cheapest 2003 Porsche 911 Alternators and Starters we carry in stock are:
- Multi-Purpose Relay (12435916) – $32.49
- ALT DECOUPLER PULLEY (50302317) – $62.99
- Overrunning Alternator Pulley (OAP) Pulley – Original Equipment Quality (10457877) – $75.99
- Starter: Remanufactured, Limited Lifetime Warranty (10973282) – $224.99
- Starter: 1.7kW/12 Volt, CW, 9-Tooth Pinion (12161645) – $261.99
What are the top-rated Alternators and Starters that fit the 2003 Porsche 911?
Out of 5 reviews by customers, our 2003 Porsche 911 Alternators and Starters have an average customer rating of . These are some of the highest-rated Alternators and Starter types for the 2003 Porsche 911 and their top-rated products:
- Alternator Parts
- Alternator: Remanufactured, 120 Amps, 2 Year Limited Warranty (16070165) – $428.99
What types of Alternators and Starters do you sell for my 2003 Porsche 911?
As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2003 Porsche 911:
Can I get help with 2003 Porsche 911 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 Porsche Alternators and Starters and more.
What is your return policy for Porsche 911 Alternators and Starters?
Advance Auto Parts keeps returns simple. For new Porsche 911 Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
