2003 Cadillac Escalade EXT Alternators

Enhance and Protect Your 2003 Cadillac Escalade EXT with Quality Alternators

Maintaining the performance of your 2003 Cadillac Escalade EXT starts with choosing the right parts, and high-quality Alternators help ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Alternators specifically for the 2003 Cadillac Escalade EXT, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Alternators for Every Budget

Finding affordable, quality Alternators is easy at Advance Auto Parts. With prices starting as low as $155.99 and an average price of $255.49, you can choose one that fits your budget while delivering the quality you expect. Our Alternators are competitively priced, ranging from $155.99 to $459.99, so you get value without compromising on strength or reliability.

Explore Related Parts for a Complete Solution

To further enhance your 2003 Cadillac Escalade EXT, don’t miss our related parts categories, including Alternator Pigtails. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.

Alternators for Your 2003 Cadillac Escalade EXT

Bosch – Alternator: Remanufactured, 105 Amps, 2 Year Limited Warranty (Part No.AL8785X)

Alternator: Remanufactured, 105 Amps, 2 Year Limited Warranty

from

$198.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 105-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for all your automotive 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 this alternator for a reliable, high-performance solution that keeps your vehicle running smoothly.

Product Features:


Product Features:
  • Full-load tested to guarantee compliance with Bosch’s strict performance specifications
  • 100% factory tested, units are remanufactured (not rebuilt)
  • Built to last – uses high quality materials and the most technologically advanced developments.
  • Provides a robust 105-amp output to ensure consistent and reliable power delivery for demanding automotive electrical systems.
  • Engineered with a clockwise rotation design for seamless compatibility and dependable performance in your vehicle.
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Carquest Standard – Alternator: Remanufactured, 105 Amps, 1 Year Limited Warranty (Part No.8247AV)

Alternator: Remanufactured, 105 Amps, 1 Year Limited Warranty

from

$155.99
Carquest Standard alternators are designed and built to meet original equipment (O.E.) specifications, while providing great value. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. All of our Carquest Standard alternators are inspected and 100% tested to ensure they are built to meet OEM fit, form and function. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


Product Features:
  • Designed to meet OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
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Carquest Premium – Alternator: Remanufactured, 145 Amps, Limited Lifetime Warranty (Part No.8292A)

Alternator: Remanufactured, 145 Amps, Limited Lifetime Warranty

from

$230.99
This remanufactured alternator delivers reliable performance with a robust 145.0-amp output and a 12.0 VDC voltage rating, ensuring your vehicle’s electrical systems operate at peak efficiency. Designed for durability and precision, it features a clockwise (right) rotation direction and belongs to the trusted Delco family, known for quality and dependability. Whether you’re powering essential components or additional accessories, this alternator is engineered to meet the demands of modern vehicles. Its remanufactured design offers a cost-effective solution without compromising on performance, making it an excellent choice for those seeking value and reliability.

Product Features:
  • Provides a robust 145-amp output to ensure optimal performance for your vehicle’s electrical systems.
  • Engineered with a clockwise rotation direction for precise compatibility with modern vehicle designs.
  • Remanufactured design offers a cost-effective solution while maintaining high-quality performance standards.
  • Belongs to the trusted Delco family, renowned for reliability and durability in automotive electrical components.
  • Designed to efficiently power both essential vehicle systems and additional accessories.
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Carquest Premium – Alternator: Remanufactured, 105 Amps, Limited Lifetime Warranty (Part No.8247A)

Alternator: Remanufactured, 105 Amps, Limited Lifetime Warranty

from

$197.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • 100% new OE-quality brushes and bearings are used to ensure long service life
  • Rotors and stators are load tested and double insulated for maximum charging performance
  • Slip rings are precision polished for maximum brush contact and service life
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
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Carquest Professional – Alternator: New, 105 Amps, Limited Lifetime Warranty (Part No.8247AN)

Alternator: New, 105 Amps, Limited Lifetime Warranty

from

$255.99
Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators are built with all new components and are 100% triple tested to ensure high quality that is backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • All new components are utilized to ensure long service life
  • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
  • Internal electronics are upgraded for heavy duty reliability (where applicable)
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
  • Rotors and stators are load tested and double insulated for maximum charging performance
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Carquest Standard – Alternator: Remanufactured, 145 Amps, 1 Year Limited Warranty (Part No.8464AV)

Alternator: Remanufactured, 145 Amps, 1 Year Limited Warranty

from

$169.99
Carquest Standard alternators are designed and built to meet original equipment (O.E.) specifications, while providing great value. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. All of our Carquest Standard alternators are inspected and 100% tested to ensure they are built to meet OEM fit, form and function. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


Product Features:
  • Designed to meet OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Professional – Alternator: New, 145 Amps, Limited Lifetime Warranty (Part No.8292AN)

Alternator: New, 145 Amps, Limited Lifetime Warranty

from

$292.99
Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators are built with all new components and are 100% triple tested to ensure high quality that is backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • All new components are utilized to ensure long service life
  • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
  • Internal electronics are upgraded for heavy duty reliability (where applicable)
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
  • Rotors and stators are load tested and double insulated for maximum charging performance
See More

ACDelco – Alternator: Remanufactured, 145 Amps (Part No.334-2529A)

Alternator: Remanufactured, 145 Amps

from

$197.99
ACDelco Gold (Professional) Remanufactured Alternators are the high quality alternative to Original Equipment (OE) parts. These alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals. Rotors and stators are electronically tested and then sealed with secondary insulating coating. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • Remanufactured using consistent quality processes; not just rebuilt
  • Alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals, reducing friction, vibration, and noise
  • Rotors and stators are electronically tested and then sealed with secondary insulating coating to help prevent shorts
  • Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications
  • Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
  • Tested to ensure they perform to ACDelco specifications
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ACDelco – Alternator: Remanufactured, 105 Amps (Part No.334-2491A)

Alternator: Remanufactured, 105 Amps

from

$205.99
ACDelco Gold (Professional) Remanufactured Alternators are the high quality alternative to Original Equipment (OE) parts. These alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals. Rotors and stators are electronically tested and then sealed with secondary insulating coating. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • Remanufactured using consistent quality processes; not just rebuilt
  • Alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals, reducing friction, vibration, and noise
  • Rotors and stators are electronically tested and then sealed with secondary insulating coating to help prevent shorts
  • Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications
  • Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
  • Tested to ensure they perform to ACDelco specifications
See More

Bosch – Alternator: Remanufactured, 145 Amps, 2 Year Limited Warranty (Part No.AL8515X)

Alternator: Remanufactured, 145 Amps, 2 Year Limited Warranty

from

$222.99
The Bosch Premium Alternator, remanufactured to deliver 145 amps of power, is engineered for peak performance and reliability. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent and dependable operation. With a 12 VDC voltage rating and clockwise rotation direction, it is designed to integrate seamlessly into your vehicle’s electrical system. Built using high-quality materials and advanced technology, it offers exceptional durability to withstand demanding conditions. Unlike rebuilt units, this alternator is 100% factory tested and remanufactured for superior quality and longevity. Whether you’re upgrading or replacing, this alternator provides unmatched value and reliability for your vehicle’s electrical needs.

Product Features:


Product Features:
  • Full-load tested to guarantee compliance with Bosch’s strict performance specifications
  • 100% factory tested, units are remanufactured (not rebuilt)
  • Built to last – uses high quality materials and the most technologically advanced developments.
  • Seamless integration into your vehicle’s electrical system with a 12 VDC voltage rating and clockwise rotation direction.
  • Engineered to withstand demanding conditions, ensuring consistent and dependable operation over time.
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GM Genuine Parts – Alternator: Remanufactured, 145 Amps, 2 Year Limited Warranty (Part No.321-2128)

Alternator: Remanufactured, 145 Amps, 2 Year Limited Warranty

from

$384.99
The remanufactured alternator delivers reliable performance with a robust 145-amp output and 12 VDC voltage, making it ideal for powering your vehicle’s electrical systems. Designed with a clockwise rotation direction and part of the trusted DELCO AD244 LN31 family, this alternator ensures compatibility with GM specifications. Featuring ACDelco GM Original Equipment quality, it benefits from industry-standard remanufacturing practices that restore parts to service while reducing waste. Each unit undergoes rigorous testing to guarantee dependable operation and long-lasting durability. Whether you’re replacing a worn-out alternator or upgrading your vehicle’s electrical system, this alternator offers exceptional value and performance.

Product Features:


Product Features:
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
  • Tested to ensure they perform to GM specifications
  • Designed with a robust 145-amp output, this alternator provides reliable power to support your vehicle’s electrical systems effectively.
  • Features a clockwise rotation direction for seamless compatibility with GM vehicles, ensuring optimal performance and fit.
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Valeo – Alternator: New, 150 Amps (Part No.849158)

Alternator: New, 150 Amps

from

$274.99
This premium Valeo alternator, delivering a robust 150-amp output at 14 VDC, is engineered for exceptional performance and reliability. Built entirely from 100% new components, it eliminates the risks associated with remanufactured units, ensuring long-lasting durability. Designed with application-specific precision, it guarantees an exact fit for seamless installation. Featuring premium rare earth magnets, this alternator maximizes output without increasing size, enhancing efficiency and fuel economy. Rigorous testing under extreme conditions for up to six months ensures its reliability in the harshest environments, while its high resistance to heat, vibration, and contaminants maintains optimal charge output. With a clockwise rotation direction and award-winning innovation, this Valeo alternator is a top-tier choice for those seeking superior electrical performance and durability.

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
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GM Genuine Parts – Alternator: Remanufactured, 105 Amps (Part No.321-2108)

Alternator: Remanufactured, 105 Amps

from

$389.99
Alternator: Remanufactured, 105 Amps delivers reliable performance with a 105-amp output and 12 VDC voltage, ensuring consistent power for your vehicle’s electrical systems. Designed with a clockwise rotation direction and part of the trusted DELCO AD230 LN31 family, this alternator meets GM specifications for quality and dependability. Featuring ACDelco GM Original Equipment standards, it benefits from remanufacturing, an eco-friendly process that restores parts to service rather than discarding them. Each unit undergoes rigorous testing to guarantee optimal functionality, making it a durable and cost-effective solution for your vehicle.

Product Features:


Product Features:
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
  • Tested to ensure they perform to GM specifications
  • Provides consistent 105-amp output to support your vehicle’s electrical systems effectively.
  • Designed with a clockwise rotation direction for seamless compatibility with GM vehicles.
See More

Carquest HD Electrical – Alternator: New, 105 Amps (Part No.71-8247N)

Alternator: New, 105 Amps

from

$201.99
Carquest Alternators with 100% NEW construction will restore hard working vehicles to exceed OE specified performance and endurance. All new units offer unmatched performance and reduce downtime.

Product Features:


Product Features:
  • Contains Innovative Brush-less and Premium Bruch Components that have been tested and certified for highest possible power output
  • Stator wound to OE specifications. Heavy Coated Polyester wire provides consistent conductivity
  • Connectors and power transmission components are highly resistant to extreme moisture environments because we use nickel plated contactors and double armature coating. We maintain a rigorous test schedule with endurance, salt spray, dirt and grime and out
  • Integrated magnetic switch provides protection against weak power from batteries.
  • Over-Crank Protection (OCP) Monitors heat in starter from over cranking & shuts down starter to prevent burning
  • Precision design and machining are the Extreme vibration failure solution. Vehicles often perform in adverse conditions like extreme temperatures that create tolerance shifts that produce high frequency vibration, which leads to resistance in power transf
  • Load dump protection ensures transient voltage spikes do not damage transistor
  • Improved power transmission with lower engine speed keeps accessories and powered implements running at maximum output without additional load to the engine.
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Powermaster Performance – Alternator: AD244 Style, 215 Amps, Natural Finish, With 4 Pin VR (Part No.48237)

Alternator: AD244 Style, 215 Amps, Natural Finish, With 4 Pin VR

from

$459.99
The Powermaster Alternator delivers exceptional performance and reliability, making it an ideal choice for street applications, including muscle cars, classics, street rods, and daily drivers. Engineered with an Ad244 style design, this alternator boasts superior output at idle, delivering an impressive 140 amperes for consistent power. Its heavy-duty regulator and rectifier, combined with high-temperature windings, ensure long-lasting durability and efficiency. Dual internal fans provide excellent cooling, while the late-model compatibility with remote voltage control adds modern convenience. Featuring a “Proof of Performance” tag, this alternator guarantees top-tier functionality and reliability. Whether you’re upgrading or replacing, this alternator is built to meet the demands of high-performance vehicles.

Product Features:


Product Features:
  • Ad244 Style
  • Superior Output At Idle, A Whopping 140 Ampere
  • Heavy Duty Regulator And Rectifier
  • High Temperature Windings
  • Dual Internal Fans For High Efficiency And Excellent Cooling
  • Late Model Compatibility With Remote Voltage Control
  • Proof Of Performance Tag
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Carquest HD Electrical – Alternator: New, 145 Amps, With Pulley (Part No.71-8292N)

Alternator: New, 145 Amps, With Pulley

from

$245.99
Carquest Starters with 100% NEW construction will restore hard working vehicles to exceed OE specified performance & endurance. All new units and components offer unmatched performance, reduce downtime & customer comebacks. Carquest HD alternators are primed to keep you moving forward. Built to perform in severe duty environments where consistent efficient high outputs are required.

Product Features:


Product Features:
  • Contains Innovative Brush-less and Premium Brush Components that have been tested and certified for highest possible power output
  • Stator – wound to OE specifications. Heavy coated Polyester wire provides consistent conductivity
  • Premium Transpo rectifiers use 13mm press fit Diodes for maximum performance
  • Rotor shafts CNC machined & precision balanced to eliminate vibration
  • Over-Voltage shutdown limits voltage if output terminal is disconnected form the battery
  • Load dump protection ensures transient voltage spikes do not damage transistor
  • Improved power transmission with lower engine speed keeps accessories and powered implements running at maximum output without additional load to the engine.
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FAQs for 2003 Cadillac Escalade EXT Alternators

Which Alternators are the top sellers for the 2003 Cadillac Escalade EXT?

Out of 16 Alternators that fit 2003 Cadillac Escalade EXTs, the following parts are the top sellers:

How can I make sure that a part will be compatible with my 2003 Cadillac Escalade EXT?

Our Cadillac Escalade EXT aftermarket and OEM parts are designed specifically for the 2003 model. You can always find your specific fitment and compatibility for your 2003 Cadillac on an individual product page.

What is the price range for 2003 Cadillac Escalade EXT Alternators?

The range of prices of Alternators for the 2003 Cadillac Escalade EXT goes from $155.99 up to $459.99 for the most premium parts.

What is the average price of 2003 Cadillac Escalade EXT Alternators?

2003 Cadillac Escalade EXT Alternators average $255.49 for our selection of OEM and aftermarket parts.

Does Advance Auto Parts sell Alternators for other Cadillac Escalade EXT model years?

Yes, we currently stock Alternators for 10 model years of Cadillac Escalade EXTs, from 2002 to 2013. Model years 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, and 2005 are the most popular for Alternators purchases.

Which Alternators are highest rated for the 2003 Cadillac Escalade EXT?

Based on 598 customer reviews, our 2003 Cadillac Escalade EXT Alternators have an average rating of 5. Explore our top-rated Alternators here:
Alternator: New, 105 Amps, Limited Lifetime Warranty
from $255.99
(75)
Alternator: New, 105 Amps, Limited Lifetime Warranty
“Works good. Just remember to make sure you have field with the key on. And hook the regulator up after the battery”
Alternator: Remanufactured, 105 Amps, Limited Lifetime Warranty
from $197.99
(67)
Alternator: Remanufactured, 105 Amps, Limited Lifetime Warranty
“Replaced bad alternator , works just fine”

Can I get help with 2003 Cadillac Escalade EXT Alternators orders?

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

What is your return policy for Cadillac Escalade EXT Alternators?

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