2009 Cadillac STS Alternator Parts

Keep Your 2009 Cadillac STS in Top Shape with Quality Alternator Parts

Whether you’re repairing or upgrading your Alternator Part, using high-quality parts is key to keeping your 2009 Cadillac STS looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Alternator Pigtails and Alternators. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Alternator Parts from Trusted Brands

Looking for a reliable Alternator Part? We’ve got you covered with options from brands you know and trust like Carquest Premium. For example, Carquest Premium Alternator Parts start at just $233.99 with an average 4.4 star rating. With over 36 reviews and a solid 4 star average, you can shop with confidence knowing other Cadillac STS owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2009 Cadillac STS Alternator Part at Advance Auto Parts is around $146.63, with a range that starts at $33.99 and goes up to $464.99. With 6 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Multi-Use Connector, Black Multi-Purpose Pigtail, and Multi-Use Connector start at just $33.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Alternator Part, don’t forget to check out other key components like Starter Parts. At Advance Auto Parts, we’re here to help you keep your 2009 Cadillac STS in peak condition, inside and out.

Essential 2009 Cadillac STS Alternator Parts

Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL8643X)

Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty

from

$464.99
The Bosch Premium Alternator, remanufactured to deliver 150 amps at 12 VDC, is engineered for peak performance and reliability. Full-load testing ensures compliance with Bosch’s rigorous performance standards, while 100% factory testing guarantees quality and dependability. Unlike rebuilt units, this alternator is remanufactured using high-quality materials and cutting-edge technology, making it a durable choice for long-term use. Designed with a clockwise rotation direction, it is built to handle demanding electrical loads with ease. Whether you’re upgrading or replacing, this alternator offers exceptional value by combining advanced engineering with proven reliability.

Product Features:


    Product Features:
    • Full-load tested to guarantee compliance with Bosch’s strict performance specifications
    • 100% factory tested, units are remanufactured (not rebuilt)
    • Built to last – uses high quality materials and the most technologically advanced developments.
    • Engineered to handle demanding electrical loads efficiently, ensuring reliable performance under heavy usage.
    • Designed with a clockwise rotation direction for seamless compatibility and optimal functionality.
See More

Carquest Premium – Alternator: Remanufactured, 155 Amps, Limited Lifetime Warranty (Part No.11046A)

Alternator: Remanufactured, 155 Amps, Limited Lifetime Warranty

from

$233.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


    Product Features:
    • Designed to meet or exceed OE specifications for fit, form and function
    • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 100% new OE-quality brushes and bearings are used to ensure long service life
    • Rotors and stators are load tested and double insulated for maximum charging performance
    • Slip rings are precision polished for maximum brush contact and service life
    • Application-specific technical bulletins included where applicable
    • All units are 100% triple tested to ensure quality and performance
    • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11248A)

Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty

from

$266.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


    Product Features:
    • Designed to meet or exceed OE specifications for fit, form and function
    • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
    • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
    • 100% new OE-quality brushes and bearings are used to ensure long service life
    • Rotors and stators are load tested and double insulated for maximum charging performance
    • Slip rings are precision polished for maximum brush contact and service life
    • Application-specific technical bulletins included where applicable
    • All units are 100% triple tested to ensure quality and performance
    • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Premium – Multi-Use Connector (Part No.PTA1229)

Multi-Use Connector

from

$46.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Multi-Use Connector (Part No.PTA1482)

Multi-Use Connector

from

$33.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

GM Genuine Parts – Black Multi-Purpose Pigtail (Part No.PT2044)

Black Multi-Purpose Pigtail

from

$42.49
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
See More

Most Popular Alternator Pigtails for 2009 Cadillac STSs

Enhance your 2009 Cadillac STS with one of the 3 Alternator Pigtails we have in stock, starting at just $33.99.

GM Genuine Parts – Black Multi-Purpose Pigtail (Part No.PT2044)

Black Multi-Purpose Pigtail

from

$42.49
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
See More

Carquest Premium – Multi-Use Connector (Part No.PTA1229)

Multi-Use Connector

from

$46.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Multi-Use Connector (Part No.PTA1482)

Multi-Use Connector

from

$33.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Best-Selling 2009 Cadillac STS Alternators

Upgrade your STS with one of our 3 best-selling Alternators, earning an average 4 stars rating across 18 reviews.

Carquest Premium – Alternator: Remanufactured, 155 Amps, Limited Lifetime Warranty (Part No.11046A)

Alternator: Remanufactured, 155 Amps, Limited Lifetime Warranty

from

$233.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • 100% new OE-quality brushes and bearings are used to ensure long service life
  • Rotors and stators are load tested and double insulated for maximum charging performance
  • Slip rings are precision polished for maximum brush contact and service life
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11248A)

Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty

from

$266.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:


Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • 100% new OE-quality brushes and bearings are used to ensure long service life
  • Rotors and stators are load tested and double insulated for maximum charging performance
  • Slip rings are precision polished for maximum brush contact and service life
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Bosch – Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty (Part No.AL8643X)

Alternator: Remanufactured, 150 Amps, 2 Year Limited Warranty

from

$464.99
The Bosch Premium Alternator, remanufactured to deliver 150 amps at 12 VDC, is engineered for peak performance and reliability. Full-load testing ensures compliance with Bosch’s rigorous performance standards, while 100% factory testing guarantees quality and dependability. Unlike rebuilt units, this alternator is remanufactured using high-quality materials and cutting-edge technology, making it a durable choice for long-term use. Designed with a clockwise rotation direction, it is built to handle demanding electrical loads with ease. Whether you’re upgrading or replacing, this alternator offers exceptional value by combining advanced engineering with proven reliability.

Product Features:


Product Features:
  • Full-load tested to guarantee compliance with Bosch’s strict performance specifications
  • 100% factory tested, units are remanufactured (not rebuilt)
  • Built to last – uses high quality materials and the most technologically advanced developments.
  • Engineered to handle demanding electrical loads efficiently, ensuring reliable performance under heavy usage.
  • Designed with a clockwise rotation direction for seamless compatibility and optimal functionality.
See More

Top-Rated Alternator Part Brands For Your 2009 Cadillac STS

When it comes to finding the perfect Alternator Part for your 2009 Cadillac STS, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Alternator Part brands including Carquest Premium, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $233.99. Purchasing a Alternator Part from us here at Advance Auto Parts is a smart move for both you and your 2009 Cadillac STS, providing peace of mind with parts that meet or exceed OEM standards.

Popular Carquest Premium 2009 Cadillac STS Alternator Parts

If you’re looking for a top-quality Alternator Part for your 2009 Cadillac STS, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Alternator Parts. We have 1 Carquest Premium Alternator Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $233.99, you’ll find the perfect Alternator Part for your needs and budget. Carquest Premium Alternator Parts for the 2009 Cadillac STS come highly rated, with over 18 customer reviews and an impressive average rating of 4.4 stars. Choosing a Carquest Premium Alternator Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Alternator: Remanufactured, 155 Amps, Limited Lifetime Warranty
from $233.99
(18)
Alternator: Remanufactured, 155 Amps, Limited Lifetime Warranty
“Excellent service. Exact fit replacement. Very happy with the part and the assistance of counter sales staff.”

FAQs for 2009 Cadillac STS Alternator Parts

What are the best-selling Alternator Parts for 2009 Cadillac STSs?

Out of 6 Alternator Parts that fit 2009 Cadillac STSs, the following parts are the top sellers:

What’s the price range for 2009 Cadillac STS Alternator Parts?

The prices of Alternator Parts for the 2009 Cadillac STS range from $33.99 up to $464.99 for the most premium parts.

What is the average price of an Alternator Part for a 2009 Cadillac STS?

The average price for Alternator Parts for the 2009 Cadillac STS is $146.63. Keep in mind the variety of part types within our Alternator Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Alternator Parts for other Cadillac STS model years?

Yes, we carry Alternator Parts for 5 model years of Cadillac STSs between 2005 and 2011. The following model years are the most popular for Alternator Part purchases: 2011, 2010, 2008, 2007, 2006, and 2005.

What are the cheapest Alternator Parts for my 2009 Cadillac STS?

The cheapest 2009 Cadillac STS Alternator Parts we carry are:

Does Advance Auto Parts sell Alternator Parts for any other 2009 Cadillac models?

Yes. We stock Alternator Parts for 5 other popular 2009 Cadillac models. Some of the most popular are 2009 Escalade Alternator Parts, 2009 Escalade ESV Alternator Parts, 2009 Escalade EXT Alternator Parts, 2009 CTS Alternator Parts, and 2009 DTS Alternator Parts.

What are the top-rated Alternator Parts that fit the 2009 Cadillac STS?

The one 2009 Cadillac STS Alternator Part we have in stock is the Multi-Use Connector. It costs $33.99.

What types of Alternator Parts do you sell for my 2009 Cadillac STS?

As of 11/2/25, these are some of the most in-demand types of Alternator Parts for a 2009 Cadillac STS:

Can I get help with 2009 Cadillac STS Alternator Part orders?

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

What is your return policy for Cadillac STS Alternator Parts?

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