2021 Chevrolet Silverado 1500 Alternators and Starters

Essential Alternators and Starters for 2021 Chevrolet Silverado 1500s

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920091A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$74.99
Litens Automotive is the original equipment (O.E.) supplier for this application. This replacement alternator pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD? type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD? is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. 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.

Product Features:
  • Designed and engineered by Litens Automotive. The inventor of the OAD? (Overrunning Alternator Decoupler)
  • Patented Original Equipment Design
  • Protects the alternator and other front-end accessory drive components
  • 17mm HexTool included in kit to assist in removal and installation
  • New cap included with the OAD (Always ensure the cap is installed after installation)
  • Installation instructions included.
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Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920114A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$61.99
Litens Automotive is the original equipment (O.E.) supplier for this application. This replacement alternator pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Patented Original Equipment Design. 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.

Product Features:
  • Designed and engineered by Litens Automotive. The inventor of the OAD (Overrunning Alternator Decoupler)
  • Protects the alternator and other front-end accessory drive components
  • 17mm Hex tool included in kit to assist in removal and installation
  • New cap included with the OAD (Always ensure the cap is installed after installation)
  • Installation instructions included
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Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920031A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$135.99
Litens Automotive is the original equipment supplier for the 2014-2018 Chevrolet Corvette, Silverado, Tahoe, Suburban / GMC Yukon, Sierra with 4.3/5.3/6.2L. This replacement pulley is also designed and produced by Litens and 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). Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Under normal driving conditions, the original pulley will require replacement in approx. 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.

Product Features:
  • Designed and engineered by Litens Automotive. The inventor of the “OAD” (overrunning alternator decoupler).
  • Patented original equipment design
  • Protects the alternator and other front-end accessory drive components
  • New cap included with the OAD
  • Installation instructions included
See More

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920030A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$128.99
Litens Automotive is the original equipment supplier for the 2014-2018 Chevrolet Corvette, Silverado,Tahoe, Suburban / GMC Yukon, Sierra with 4.3/5.3/6.2L . This replacement pulley is also designed and produced by Litens and 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). Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Under normal driving conditions, the original pulley will require replacement in approx. 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.

Product Features:
  • Designed and engineered by Litens Automotive. The inventor of the “OAD” (overrunning alternator decoupler).
  • Patented original equipment design
  • Protects the alternator and other front-end accessory drive components
  • New cap included with the OAD
  • Installation instructions included
See More

Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.6970SN)

Starter: New, Limited Lifetime Warranty

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:
  • 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
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ACDelco – Starter: Remanufactured (Part No.336-1932A)

Starter: Remanufactured

from

$208.99
Product Features:
  • Remanufactured using consistent quality processes; not just rebuilt
  • Starters have new bronze sintered and oil-impregnated armature bushings
  • Solenoid contacts are new with copper terminals and plated hardware
  • Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications
  • Designed to meet the fit, form, and function expectations for a wide range of vehicles, including General Motors and special applications.
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GM Genuine Parts – Starter: Remanufactured (Part No.323-1663)

Starter: Remanufactured

from

$218.99
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
  • Features a 9-tooth configuration and clockwise rotation for compatibility with specific GM vehicle applications.
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.6942S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$246.99
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:
  • 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
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.6489S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$176.99
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:


    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.
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Carquest Professional – Starter: New, Limited Lifetime Warranty (Part No.6485SN)

Starter: New, Limited Lifetime Warranty

from

$199.99
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:


    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
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GM Genuine Parts – WIRE CONNECTOR (Part No.PT2971)

WIRE CONNECTOR

from

$52.99
WIRE CONNECTOR

Dorman – Help – Starter Mounting Bolt, Type 1 Long (Part No.72004)

Starter Mounting Bolt, Type 1 Long

from

$5.79
This starter bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this starter bolt matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – Alternator: Remanufactured, 130 Amps, Limited Lifetime Warranty (Part No.8237A)

Alternator: Remanufactured, 130 Amps, Limited Lifetime Warranty

from

$176.99
The Carquest Premium Remanufactured Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. Designed to meet or exceed OE quality in fit, form, and function, this alternator boasts a robust 130-amp output and operates at 12.0 VDC with a clockwise rotation. Each unit undergoes a rigorous triple-testing process to ensure optimal quality and performance, while all wear components, including brushes, bushings, and bearings, are replaced with brand-new parts during remanufacturing. Unlike rebuilt units, this alternator is thoroughly inspected and 100% performance-tested from components to final assembly, ensuring dependable service. Backed by a dedicated Tech Hotline with ASE Certified Technicians, Carquest provides expert support for your installation and troubleshooting needs. Trust this Delco family alternator to deliver long-lasting durability and reliable power for your vehicle.

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
  • Designed to meet or exceed OE quality standards in fit, form, and function for reliable and precise performance.
  • Thoroughly inspected and 100% performance-tested from individual components to final assembly for dependable operation.
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Bosch – Alternator: Remanufactured, 145 Amps, Limited Lifetime Warranty (Part No.AL8855X)

Alternator: Remanufactured, 145 Amps, Limited Lifetime Warranty

from

$251.99
The Bosch Premium Alternator, delivering 145 amps and operating at 12 VDC with a clockwise rotation, is engineered for exceptional performance and reliability. Each unit is 100% factory tested and remanufactured – not rebuilt – to meet Bosch’s rigorous performance standards. Full-load testing ensures compliance with strict specifications, while high-quality materials and advanced technology enhance durability and longevity. Whether you’re replacing a worn-out alternator or upgrading for better performance, this alternator is built to last and provide consistent power for your vehicle’s electrical systems. Trust Bosch for a dependable 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.
    • Engineered for consistent power delivery to support your vehicle’s electrical systems effectively.
    • Designed for exceptional reliability, ensuring smooth operation and reduced downtime.
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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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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
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Carquest Premium – Alternator: Remanufactured, 145 Amps, Limited Lifetime Warranty (Part No.8550A)

Alternator: Remanufactured, 145 Amps, Limited Lifetime Warranty

from

$219.99
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, 170 Amps, 2 Year Limited Warranty (Part No.AL8869X)

Alternator: Remanufactured, 170 Amps, 2 Year Limited Warranty

from

$281.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding automotive needs. With a robust 170-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for your vehicle’s electrical systems. 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 advanced technology, ensuring long-lasting durability. Its clockwise rotation direction and premium construction make it a dependable replacement part that stands up to rigorous use. Choose this alternator for unmatched value and peace of mind on the road.

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.
    • Delivers consistent 170-amp output to support demanding vehicle electrical systems.
    • Engineered for durability with premium construction to withstand rigorous use.
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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
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Carquest HD Electrical – Alternator: New, 125 Amps, With Pulley (Part No.71-11234N)

Alternator: New, 125 Amps, With Pulley

from

$348.99
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:
  • High quality components form the foundation our parts are built from. Transpo¿s innovative and high quality electronic technologies for internal components are incorporated to achieve high performance outputs.
  • High quality components form the foundation our parts are built from. Transpo┐s innovative and high quality electronic technologies for internal components are incorporated to achieve high performance outputs.
  • Power & Efficiency are designed into every component. No matter the ambient temperature, starters will provide maximum cranking power to get engines running.
  • 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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Carquest Premium – Alternator: Remanufactured, 170 Amps, Limited Lifetime Warranty (Part No.42093A)

Alternator: Remanufactured, 170 Amps, Limited Lifetime Warranty

from

$528.99
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 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

Carquest Professional – Alternator: New, 145 Amps, Limited Lifetime Warranty (Part No.8302AN)

Alternator: New, 145 Amps, Limited Lifetime Warranty

from

$271.99
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

Carquest Professional – Alternator: New, 160 Amps, Limited Lifetime Warranty (Part No.11075AN)

Alternator: New, 160 Amps, Limited Lifetime Warranty

from

$274.99
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
  • 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 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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Bosch – Alternator: Remanufactured, 160 Amps, 2 Year Limited Warranty (Part No.AL8555X)

Alternator: Remanufactured, 160 Amps, 2 Year Limited Warranty

from

$344.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding automotive applications. Full-load tested to meet Bosch’s rigorous performance standards, this alternator ensures consistent power delivery with its 160-amp rating and 12 VDC output. Remanufactured using advanced technology and high-quality materials, it offers durability that stands the test of time. Unlike rebuilt units, Bosch’s remanufactured alternators undergo 100% factory testing to guarantee optimal functionality. Designed for clockwise rotation, this alternator is engineered to provide seamless compatibility and dependable operation. Whether you’re upgrading or replacing, this alternator combines precision engineering with long-lasting value, ensuring your vehicle stays powered under all conditions.

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 for seamless compatibility, ensuring dependable operation in demanding automotive applications.
    • Designed with a 160-amp rating to deliver consistent and reliable power under all conditions.
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WAI – Bosch Ir/If 150 Amp/12 Volts, Cw, 6-Groove Pulley, Limited Lifetime Warranty (Part No.11075N)

Bosch Ir/If 150 Amp/12 Volts, Cw, 6-Groove Pulley, Limited Lifetime Warranty

from

$197.99
This 150-amp alternator from WAI is engineered to deliver exceptional performance and reliability, making it a top choice for aftermarket replacements. Designed to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. The advanced voltage regulator protection safeguards against transient voltage spikes, preventing potential battery damage, while its low saturation voltage minimizes heat dissipation for enhanced durability. Featuring a high-power rectifier assembly with open junction press-fit diodes, this alternator is built to run cooler and more efficiently. Each unit is rigorously tested, and a printed copy of the test results is included, giving you confidence in its performance from the moment it powers on. With WAI’s commitment to quality, this alternator is a dependable solution for maintaining your vehicle’s electrical system.

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.
  • Rigorously tested for exceptional performance and reliability, ensuring long-lasting operation and peace of mind.
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Carquest Premium – Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty (Part No.11785A)

Alternator: Remanufactured, 150 Amps, Limited Lifetime Warranty

from

$431.99
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
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Upgrade your 2021 Chevrolet Silverado 1500 with Top-Quality Alternators and Starters

When it comes to maintaining or upgrading your 2021 Chevrolet Silverado 1500, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Chevrolet or enhancing its overall performance, Alternators and Starters are key to keeping your Silverado 1500 functioning at its best. At Advance Auto Parts, we offer a wide selection of 8 Alternators and Starters for the 2021 Chevrolet Silverado 1500, designed to meet your needs without breaking the bank. From Starter Part replacements to Alternator Pulley 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 Chevrolet Silverado 1500 at great prices. Our Alternators and Starters inventory for this model ranges from just $5.79 to $618.99, with an average price of $187.96. Our 8 Alternators and Starters in stock come from 5 trusted brands, so you’re sure to find the right part for your 2021 Chevrolet Silverado 1500 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 Chevrolet Silverado 1500 is always ready to roll. We’re committed to providing you with everything you need to keep your Silverado 1500 in top shape, all in one place. Start shopping confidently below for your 2021 Chevrolet Silverado 1500!

Best-Selling Starter Parts for 2021 Chevrolet Silverado 1500s

Enhance the driving experience in your Chevrolet with 4 quality Starter Part components, starting at $5.79.

Dorman – Help – Starter Mounting Bolt, Type 1 Long (Part No.72004)

Starter Mounting Bolt, Type 1 Long

from

$5.79
This starter bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this starter bolt matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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WAI – Starter: 1.4kW/12 Volt, CW, 10Tooth Pinion (Part No.10910N)

Starter: 1.4kW/12 Volt, CW, 10Tooth Pinion

from

$412.99
Product Features:
  • 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.
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Carquest Premium – Starter: Remanufactured, Limited Lifetime Warranty (Part No.12891S)

Starter: Remanufactured, Limited Lifetime Warranty

from

$256.99
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:
  • 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
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GM Genuine Parts – WIRE CONNECTOR (Part No.PT2971)

WIRE CONNECTOR

from

$52.99
WIRE CONNECTOR

Most Popular 2021 Chevrolet Silverado 1500 Alternator Pulley Parts

Customize your Chevrolet with 2 Alternator Pulley Parts products like Alternator Decoupler Pulleys, all priced under $74.99.

Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920091A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$74.99
Litens Automotive is the original equipment (O.E.) supplier for this application. This replacement alternator pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD? type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD? is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. 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.

Product Features:
  • Designed and engineered by Litens Automotive. The inventor of the OAD? (Overrunning Alternator Decoupler)
  • Patented Original Equipment Design
  • Protects the alternator and other front-end accessory drive components
  • 17mm HexTool included in kit to assist in removal and installation
  • New cap included with the OAD (Always ensure the cap is installed after installation)
  • Installation instructions included.
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Litens – Overrunning Alternator Decoupling (OAD) Pulley – Original Equipment Quality (Part No.920114A)

Overrunning Alternator Decoupling (OAD) Pulley - Original Equipment Quality

from

$61.99
Litens Automotive is the original equipment (O.E.) supplier for this application. This replacement alternator pulley is also designed and produced by Litens and is exact in all form, fit, and performance characteristics as the original equipment part. Decoupling pulleys are engine specific and should never be interchanged with other types of pulley technology. The Litens OAD type pulley is designed to free-wheel in one direction and, with an internal spring and damping device, softly engage in the opposite direction. The OAD is designed as a sacrificial part of the front-end accessory drive system, protecting other belt driven component as well as the alternator. The correct decoupler pulley ensures smooth, quiet performance as well as increasing vehicle gas mileage. Patented Original Equipment Design. 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.

Product Features:
  • Designed and engineered by Litens Automotive. The inventor of the OAD (Overrunning Alternator Decoupler)
  • Protects the alternator and other front-end accessory drive components
  • 17mm Hex tool included in kit to assist in removal and installation
  • New cap included with the OAD (Always ensure the cap is installed after installation)
  • Installation instructions included
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Top Picks for 2021 Chevrolet Silverado 1500 Alternator Parts

Upgrade Chevrolet Silverado 1500s with top-quality Alternator Parts parts, including 2 OEM and aftermarket selections for your 2021 model.

Carquest Premium – Alternator: Remanufactured, 250 Amps (Part No.10459A)

Alternator: Remanufactured, 250 Amps

from

$618.99
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, 250 Amps (Part No.10440A)

Alternator: Remanufactured, 250 Amps

from

$558.99
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

FAQs for 2021 Chevrolet Silverado 1500 Alternators and Starters

Which Alternators and Starters are best-sellers for 2021 Chevrolet Silverado 1500s?

Out of 8 Alternators and Starters that fit 2021 Chevrolet Silverado 1500s, the following parts are the top sellers:

What’s the price range for 2021 Chevrolet Silverado 1500 Alternators and Starters?

Alternators and Starter prices for the 2021 Chevrolet Silverado 1500 start at $5.79 and go up to $618.99 for the most premium parts.

What’s the average price of a Alternators and Starter for a 2021 Chevrolet Silverado 1500?

The average price for Alternators and Starters for the 2021 Chevrolet Silverado 1500 is $187.96. 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 Chevrolet Silverado 1500 model years?

Yes, we currently carry Alternators and Starters for 26 model years of Chevrolet Silverado 1500s between 1999 and 2026. Alternators and Starters are bought most frequently for the following model years: 2022, 2020, 2019, 2018, 2017, 2016, 2015, 2014, and 2013.

What are the cheapest Alternators and Starters for my 2021 Chevrolet Silverado 1500?

The cheapest 2021 Chevrolet Silverado 1500 Alternators and Starters we carry in stock are:

What types of Alternators and Starters do you sell for my 2021 Chevrolet Silverado 1500?

As of 11/2/25, these are some of the most in-demand types of Alternators and Starters for a 2021 Chevrolet Silverado 1500:

Can I get help with 2021 Chevrolet Silverado 1500 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 Chevrolet Alternators and Starters and more.

What is your return policy for Chevrolet Silverado 1500 Alternators and Starters?

Advance Auto Parts keeps returns simple. For new Chevrolet Silverado 1500 Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.