2021 GMC Terrain Alternators and Starters
Find Your Specific 2021 GMC Terrain Alternators and Starters
Below you will find various in-demand GMC Alternators and Starters, components and accessories for your 2021 Terrain. Advance Auto Parts has popular Terrain parts like Starter Parts Alternator Parts and more. You’ll also find aftermarket and OEM Alternators and Starters for other Terrain model years including
2013,
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2022 and more. Select a category of 2021 GMC Terrain Alternators and Starters below and start saving instantly.
Popular 2021 GMC Terrain Alternators and Starters Categories
Essential Alternators and Starters for 2021 GMC Terrains
Valeo – Alternator: New, 150 Amps (Part No.849106)
from
$304.99
The Valeo premium alternator, delivering 150 amps at 12 VDC, is a top-tier solution for reliable electrical performance. Built entirely with new components, this alternator eliminates the risk of premature failure often associated with remanufactured units, ensuring long-lasting durability. Designed with application-specific parts for an exact fit, it features premium rare earth magnets that enhance output efficiency without increasing size. Tested rigorously for up to six months under extreme conditions, it guarantees reliability even in the harshest environments, resisting heat, vibration, and contaminants to maintain maximum charge output. With a clockwise rotation direction and original equipment quality, Part Number 849106 is now available in the aftermarket, offering unmatched compatibility and performance. Recognized for innovation, Valeo alternators improve fuel economy and eliminate voltage drops, making them a smart investment for any vehicle’s electrical system.
Product Features:
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Product Features:
- Valeo premium alternators are 100% new products (not remanufactured)
- 100% new components and core eliminates premature failure for increased durability over remanufactured units
- All parts are application specific for an exact fit
- Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
- All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
- High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
- Part Number 849106 is the original equipment part now available in the aftermarket.
Carquest Premium – Alternator: Remanufactured, 125 Amps, Limited Lifetime Warranty (Part No.11459A)
from
$262.99
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:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
- Regulators and rectifiers are 100% electronically load tested for reliable charging performance
- 100% new OE-quality brushes and bearings are used to ensure long service life
- Rotors and stators are load tested and double insulated for maximum charging performance
- Slip rings are precision polished for maximum brush contact and service life
- Application-specific technical bulletins included where applicable
- All units are 100% triple tested to ensure quality and performance
- Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
Carquest Premium – Alternator: Remanufactured, 130 Amps, Limited Lifetime Warranty (Part No.10427A)
from
$351.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading limited warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
Product Features:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
- Regulators and rectifiers are 100% electronically load tested for reliable charging performance
- 100% new OE-quality brushes and bearings are used to ensure long service life
- Rotors and stators are load tested and double insulated for maximum charging performance
- Slip rings are precision polished for maximum brush contact and service life
- Application-specific technical bulletins included where applicable
- All units are 100% triple tested to ensure quality and performance
- Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
Product Features:
Valeo – Alternator: New, 130 Amps (Part No.849114)
from
$314.99
Valeo’s premium alternator, delivering 130 amps and operating at 12 VDC, is a standout choice for reliable electrical performance. Built entirely with new components, this alternator eliminates the risk of premature failure, offering superior durability compared to remanufactured units. Designed with application-specific parts for an exact fit, it ensures seamless integration into your vehicle’s electrical system. Featuring premium rare earth magnets, it maximizes output efficiency without increasing size, making it a compact yet powerful solution. Tested under extreme conditions for up to six months, this alternator is engineered to withstand heat, vibration, and contaminants, ensuring consistent performance even in the harshest environments. With a clockwise rotation direction and original equipment quality, Part Number 849114 is now available in the aftermarket, providing the same trusted reliability as factory-installed components. Ideal for maintaining maximum charge output, this Valeo alternator is a smart investment for boosting fuel economy and eliminating voltage drops.
Product Features:
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Product Features:
- Valeo premium alternators are 100% new products (not remanufactured)
- 100% new components and core eliminates premature failure for increased durability over remanufactured units
- All parts are application specific for an exact fit
- Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
- All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
- High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
- Part Number 849114 is the original equipment part now available in the aftermarket.
Bosch – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.AL8831X)
from
$404.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 150-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for demanding applications. It is remanufactured, not rebuilt, and undergoes 100% factory testing to meet Bosch’s stringent performance standards. Full-load testing guarantees compliance with specifications, while high-quality materials and advanced technology enhance durability and longevity. Designed for clockwise rotation, this alternator is built to last and provide dependable service, offering excellent value for your investment.
Product Features:
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Product Features:
- Full-load tested to guarantee compliance with Bosch’s strict performance specifications
- 100% factory tested, units are remanufactured (not rebuilt)
- Built to last – uses high quality materials and the most technologically advanced developments.
- Provides consistent 150-amp power output to support demanding electrical applications.
- Designed for clockwise rotation to ensure compatibility and optimal performance in applicable vehicle systems.
Product Features:
Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11453A)
from
$219.99
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
GM Genuine Parts – Alternator: New, 155 Amps, 2 Year Limited Warranty (Part No.22988006)
from
$529.99
GM Genuine Parts Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These alternators provide power to the vehicle’s electrical systems and charge the battery while the engine is running. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
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Product Features:
- Newly manufactured as an exact replacement for your GM vehicle’s original alternator
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Valeo – Alternator: New, 150 Amps (Part No.849183)
from
$389.99
The Valeo 150 Amp Alternator is a premium, 100% new product designed to deliver exceptional performance and reliability. Unlike remanufactured units, this alternator features all-new components and core, ensuring increased durability and eliminating the risk of premature failure. Engineered with application-specific parts, it guarantees an exact fit for seamless installation. Utilizing premium rare earth magnets, it achieves higher output without increasing size, enhancing efficiency and fuel economy. Tested under extreme conditions for up to six months, this alternator is built to withstand the harshest environments, including high heat, vibration, and exposure to contaminants, ensuring consistent and maximum charge output. With a 14 VDC voltage rating and clockwise rotation, this alternator is a top-tier choice for demanding electrical systems.
Product Features:
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Product Features:
- Valeo premium alternators are 100% new products (not remanufactured)
- 100% new components and core eliminates premature failure for increased durability over remanufactured units
- All parts are application specific for an exact fit
- Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
- All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
- High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
GM Genuine Parts – Alternator: New, 150 Amps, 2 Year Limited Warranty (Part No.23285091)
from
$435.99
GM Genuine Parts Alternators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These alternators provide power to the vehicle’s electrical systems and charge the battery while the engine is running. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
See More
Product Features:
- Newly manufactured as an exact replacement for your GM vehicle’s original alternator
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.19614S)
from
$309.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
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Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.6947SN)
from
$273.99
Carquest Professional starters are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new starters are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional starters are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new starters 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:
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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
- Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
- All new components are utilized to ensure long service life
- Internal electronics are upgraded for heavy duty reliability (where applicable)
- Armatures and commutators are 100% load tested
- 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
- 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
- Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
- All new components are utilized to ensure long service life
- Internal electronics are upgraded for heavy duty reliability (where applicable)
- Armatures and commutators are 100% load tested
- Application-specific technical bulletins included where applicable
- All units are 100% triple tested to ensure quality and performance
- Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.17997SN)
from
$366.99
Carquest Professional starters are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new starters are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional starters are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new starters 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:
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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
- Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
- All new components are utilized to ensure long service life
- Internal electronics are upgraded for heavy duty reliability (where applicable)
- Armatures and commutators are 100% load tested
- 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
- 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
- Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
- All new components are utilized to ensure long service life
- Internal electronics are upgraded for heavy duty reliability (where applicable)
- Armatures and commutators are 100% load tested
- 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
GM Genuine Parts – Starter: New (Part No.12663052)
from
$360.99
GM Genuine Parts Starter Motors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These starters consist of a powerful motor coupled to the starter drive pinion. The starter drive pinion engages the engine flywheel to crank the engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
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Product Features:
- Newly manufactured as an exact replacement for your GM vehicle’s original starter
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
GM Genuine Parts – Starter: New (Part No.12645298)
from
$264.99
The newly manufactured starter motor is an exact replacement for your GM vehicle’s original starter, ensuring seamless compatibility and reliable performance. Designed, engineered, and rigorously tested to meet GM’s high standards, this starter motor is backed by General Motors for added peace of mind. With a clockwise rotation, 12-tooth configuration, and 12 VDC voltage, it delivers precise and efficient operation tailored to your Chevrolet, Buick, GMC, or Cadillac vehicle. As part of the MIPGM0T2 family, this starter incorporates updated materials and advanced technologies, reflecting GM’s commitment to innovation and durability. Whether you’re restoring your vehicle’s starting system or upgrading for long-term reliability, this GM Genuine Part offers exceptional value and performance.
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.12473S)
from
$343.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
Product Features:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
- 100% remanufactured drive clutch assembly ensures lasting performance
- Armatures and commutators are 100% load tested
- New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
- Application-specific technical bulletins included where applicable
- All units are 100% triple tested to ensure quality and performance
- Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
- This part number is upgraded with a durable sealant to help prevent contamination from engine leaks
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.6947S)
from
$145.99
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 a Limited Warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
Product Features:
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Product Features:
- Each unit is triple-tested to ensure quality and performance
- All wear components (brushes, bushings, and bearings) are replaced with all NEW components in the remanufacturing process
- Tech Hotline with trained ASE Certified Technicians: Call Carquest Technical Support at 1-800-228-9672
- Remanufactured to meet or exceed OE specifications for fit, form, and function, ensuring reliable performance and compatibility.
- 100% electronic testing of all critical components and the entire unit guarantees optimal functionality and durability.
Product Features:
GM Genuine Parts – Starter: New (Part No.12609317)
from
$254.99
GM Genuine Parts Starter Motors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These starters consist of a powerful motor coupled to the starter drive pinion. The starter drive pinion engages the engine flywheel to crank the engine. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
See More
Product Features:
- Newly manufactured as an exact replacement for your GM vehicle’s original starter
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Bosch – Starter: Remanufactured (Part No.SR8661X)
from
$239.99
The Bosch Premium Starter is engineered to deliver exceptional performance and reliability, making it a trusted choice for your vehicle’s ignition system. Designed with a clockwise (right) rotation and featuring a 12-tooth configuration, this starter ensures precise engagement and smooth operation. Operating at 12 VDC, it provides consistent power to meet the demands of your engine. Built to Bosch’s high standards, this remanufactured starter undergoes rigorous testing to ensure durability and long-lasting performance. Whether you’re replacing a worn-out starter or upgrading for better reliability, this premium component offers excellent value and compatibility with your vehicle.
Product Features:
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Product Features:
- Engineered for exceptional performance and reliability, ensuring dependable ignition system operation.
- Designed with a 12-tooth configuration for precise engagement and smooth functionality.
- Operates at 12 VDC to deliver consistent power tailored to your engine’s demands.
- Remanufactured to Bosch’s high standards, undergoing rigorous testing for durability and long-lasting performance.
- Offers excellent value and compatibility, making it an ideal choice for replacing or upgrading your vehicle’s starter.
Product Features:
GM Genuine Parts – WIRE CONNECTOR (Part No.PT2971)
from
$52.99
WIRE CONNECTOR
Upgrade your 2021 GMC Terrain with Top-Quality Alternators and Starters
When it comes to maintaining or upgrading your 2021 GMC Terrain, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Alternators and Starters are key to keeping your Terrain functioning at its best. At Advance Auto Parts, we offer a wide selection of 3 Alternators and Starters for the 2021 GMC Terrain, designed to meet your needs without breaking the bank.
From
Starter Part
replacements to
Alternator Parts
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Alternators and Starters for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Alternators and Starters for your 2021 GMC Terrain at great prices.
Our Alternators and Starters inventory for this model
ranges from just $52.99 to $351.99, with
an average price of $249.66.
Our 3 Alternators and Starters in stock come from 2 trusted brands, so you’re sure to find the right part for your 2021 GMC Terrain without overspending.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Alternators and Starter upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2021 GMC Terrain is always ready to roll. We’re committed to providing you with everything you need to keep your Terrain in top shape, all in one place.
Start shopping confidently below for your 2021 GMC Terrain!
Best-Selling Starter Parts for 2021 GMC Terrains
Enhance the driving experience in your GMC with 2 quality Starter Part components, starting at $52.99.
Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.12473S)
from
$343.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
- 100% remanufactured drive clutch assembly ensures lasting performance
- Armatures and commutators are 100% load tested
- New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
- Application-specific technical bulletins included where applicable
- All units are 100% triple tested to ensure quality and performance
- Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
- This part number is upgraded with a durable sealant to help prevent contamination from engine leaks
GM Genuine Parts – WIRE CONNECTOR (Part No.PT2971)
from
$52.99
WIRE CONNECTOR
Most Popular 2021 GMC Terrain Alternator Parts
Customize your GMC with 1 Alternator Parts products
like Alternators, all
priced under $351.99.
Carquest Premium – Alternator: Remanufactured, 130 Amps, Limited Lifetime Warranty (Part No.10427A)
from
$351.99
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
FAQs for 2021 GMC Terrain Alternators and Starters
Which Alternators and Starters are best-sellers for 2021 GMC Terrains?
Out of 3 Alternators and Starters that fit 2021 GMC Terrains, the following parts are the top sellers:
- Starter: Remanufactured, Limited Lifetime Warranty (12007228) – $343.99
- Alternator: Remanufactured, 130 Amps, Limited Lifetime Warranty (12519279) – $351.99
- WIRE CONNECTOR (50130729) – $52.99
What’s the price range for 2021 GMC Terrain Alternators and Starters?
Alternators and Starter prices for the 2021 GMC Terrain start at $52.99 and go up to $351.99 for the most premium parts.
What’s the average price of a Alternators and Starter for a 2021 GMC Terrain?
The average price for Alternators and Starters for the 2021 GMC Terrain is $249.66. 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 GMC Terrain model years?
What are the cheapest Alternators and Starters for my 2021 GMC Terrain?
The cheapest 2021 GMC Terrain Alternators and Starters we carry in stock are:
- WIRE CONNECTOR (50130729) – $52.99
- Starter: Remanufactured, Limited Lifetime Warranty (12007228) – $343.99
- Alternator: Remanufactured, 130 Amps, Limited Lifetime Warranty (12519279) – $351.99
What types of Alternators and Starters do you sell for my 2021 GMC Terrain?
As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2021 GMC Terrain:
Can I get help with 2021 GMC Terrain 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 GMC Alternators and Starters and more.
What is your return policy for GMC Terrain Alternators and Starters?
Advance Auto Parts keeps returns simple. For new GMC Terrain Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
