1990 GMC C2500 Alternator Parts

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Keep Your 1990 GMC C2500 in Top Shape with Quality Alternator Parts

Whether you’re repairing or upgrading your Alternator Part, using high-quality parts is key to keeping your 1990 GMC C2500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Alternator Brackets, Alternator Rectifiers, and Alternators. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Alternator Parts from Trusted Brands

Looking for a reliable Alternator Part? We’ve got you covered with options from brands you know and trust like Carquest, Carquest Professional, and Carquest Premium. For example, Carquest Alternator Parts start at just $116.99 with an average 4.4 star rating. Carquest Professional and Carquest Premium offer similar pricing and quality, backed by strong customer feedback. With over 1,288 reviews and a solid 4.3 star average, you can shop with confidence knowing other GMC C2500 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1990 GMC C2500 Alternator Part at Advance Auto Parts is around $132.76, with a range that starts at $12.99 and goes up to $284.99. With 24 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Carquest Alternator: Remanufactured, 100 Amps, 7861-7A, Carquest Alternator: New, 100 Amps, 7861-7AN, and Carquest Alternator: Remanufactured, 105 Amps, 7861-11A start at just $148.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Alternator Part, don’t forget to check out other key components like Ignition Lock Parts and Starter Parts. At Advance Auto Parts, we’re here to help you keep your 1990 GMC C2500 in peak condition, inside and out.

Essential 1990 GMC C2500 Alternator Parts

Carquest Premium – Carquest Multi-Use Connector, PTA1117 (Part No.PTA1117)

Carquest Multi-Use Connector, PTA1117

from

$50.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA1201 (Part No.PTA1201)

Carquest Multi-Use Connector, PTA1201

from

$31.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

Carquest Premium – Carquest Multi-Use Connector, PTA1047 (Part No.PTA1047)

Carquest Multi-Use Connector, PTA1047

from

$19.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

Top Street Performance – Top Street Performance Chevrolet Small Block Long Water Pump Chrome Aluminum10SI Alternator Bracket, JM9121C (Part No.JM9121C)

Top Street Performance Chevrolet Small Block Long Water Pump Chrome Aluminum10SI Alternator Bracket, JM9121C

from

$126.99
TSP’s billet aluminum brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. They are available in multiple high-quality finishes to match your desired aesthetic.
See More

Top Street Performance – Top Street Performance Chevrolet Small Block Long Water Pump Polished Aluminum10SI Alternator Bracket, JM9121P (Part No.JM9121P)

Top Street Performance Chevrolet Small Block Long Water Pump Polished Aluminum10SI Alternator Bracket, JM9121P

from

$113.99
TSP’s billet aluminum brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. They are available in multiple high-quality finishes to match your desired aesthetic.
See More

Mr. Gasket – Mr. Gasket Chrome Low Mount Alternator Bracket – Small Block Chevy – Dress Up Your Engine!, 5179 (Part No.5179)

Mr. Gasket Chrome Low Mount Alternator Bracket - Small Block Chevy - Dress Up Your Engine!, 5179

from

$88.69
Mr. Gasket small block Chevy lower alternator mounting kit designed to work with a short water pump. Made of heavy gauge chrome plated steel. Complete with all necessary mounting hardware. Designed to relocate the alternator to the lower left side of the motor. This mounting bracket will make your engine compartment look neat and sanitary. Possible cross member interference on some applications.
See More

Top Street Performance – Top Street Performance Chevrolet Small Block Long Water Pump Black Aluminum10SI Alternator Bracket, JM9121BK (Part No.JM9121BK)

Top Street Performance Chevrolet Small Block Long Water Pump Black Aluminum10SI Alternator Bracket, JM9121BK

from

$119.99
TSP’s billet aluminum brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. They are available in multiple high-quality finishes to match your desired aesthetic.
See More

Carquest Standard – Carquest Alternator: Remanufactured, 100 Amps, 8165-7AV (Part No.8165-7AV)

Carquest Alternator: Remanufactured, 100 Amps, 8165-7AV

from

$134.99
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.
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Carquest Standard – Carquest Alternator: Remanufactured, 63 Amps, 7127-3AV (Part No.7127-3AV)

Carquest Alternator: Remanufactured, 63 Amps, 7127-3AV

from

$82.99
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.
See More

Carquest Premium – Carquest Alternator: Remanufactured, 100 Amps, 7861-7A (Part No.7861-7A)

Carquest Alternator: Remanufactured, 100 Amps, 7861-7A

from

$148.99
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.
See More

Carquest Premium – Carquest Alternator: Remanufactured, 63 Amps, 7127-9A (Part No.7127-9A)

Carquest Alternator: Remanufactured, 63 Amps, 7127-9A

from

$114.99
The Carquest Premium Remanufactured Alternator delivers exceptional reliability and performance, making it a trusted choice for your vehicle’s electrical system. Designed to meet or exceed OE quality in fit, form, and function, this alternator undergoes a rigorous remanufacturing process where all wear components, such as brushes, bushings, and bearings, are replaced with brand-new parts. Each unit is triple-tested, from individual components to final assembly, ensuring dependable service and consistent performance. With a 63-amp output, 12.0 VDC voltage, and a clockwise rotation direction, it is built to handle demanding electrical loads. Backed by a dedicated tech hotline staffed with ASE Certified Technicians, support is just a call away. Choose this alternator for a premium blend of durability, precision, and peace of mind.
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Bosch – Bosch Alternator: Remanufactured, 105 Amps, AL668X (Part No.AL668X)

Bosch Alternator: Remanufactured, 105 Amps, AL668X

from

$156.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 105-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for all your automotive needs. Engineered with precision, it features full-load testing to meet Bosch’s stringent performance standards and is 100% factory tested for quality assurance. Unlike rebuilt units, this alternator is remanufactured using high-quality materials and cutting-edge technology, ensuring long-lasting durability. Its clockwise rotation direction and advanced design make it a dependable replacement part that stands up to demanding conditions. Choose this alternator for a reliable, high-performance solution that keeps your vehicle running smoothly.
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WAI – WAI Alternator: 100% NEW, 200 Amps, 7861-7N-HO (Part No.7861-7N-HO)

WAI Alternator: 100% NEW, 200 Amps, 7861-7N-HO

from

$211.99
This 100% NEW alternator from WAI is a premium choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. Its advanced voltage regulator protection guards against transient voltage spikes, preventing potential battery damage, while the low saturation voltage minimizes heat dissipation for enhanced durability. The high-power rectifier assembly, featuring open junction press-fit diodes, is designed to keep the unit running cool even under demanding conditions. Fully compliant with ECU communication, this alternator guarantees seamless integration with your vehicle’s system. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. Built for long-lasting efficiency, this alternator delivers exceptional value for your vehicle’s electrical system.
See More

Bosch – Bosch Alternator: Remanufactured, 62 Amps, AL530X (Part No.AL530X)

Bosch Alternator: Remanufactured, 62 Amps, AL530X

from

$95.99
Alternator: Remanufactured, 62 Amps delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. Engineered with precision, this Bosch Premium Alternator is full-load tested to meet strict performance standards, ensuring dependable operation under demanding conditions. Remanufactured using high-quality aluminum and advanced technology, it offers durability that stands the test of time. With a 62-amp amperage rating and 12 VDC voltage, it provides consistent power output to keep your vehicle running smoothly. The clockwise rotation direction ensures compatibility with a wide range of applications. Factory-tested for quality assurance, this alternator is built to last, offering excellent value for those seeking a reliable replacement part.
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Carquest Premium – Carquest Alternator Brush Set, XAA1042 (Part No.XAA1042)

Carquest Alternator Brush Set, XAA1042

from

$10.49
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
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Carquest Premium – Carquest Alternator Brush Set, XAA1055 (Part No.XAA1055)

Carquest Alternator Brush Set, XAA1055

from

$12.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Brush Set, XAC1066 (Part No.XAC1066)

Carquest Alternator Brush Set, XAC1066

from

$12.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1008 (Part No.SCA1008)

Carquest Alternator Rectifier Bridge, SCA1008

from

$31.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1039 (Part No.SCA1039)

Carquest Alternator Rectifier Bridge, SCA1039

from

$33.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1021 (Part No.SCA1021)

Carquest Alternator Rectifier Bridge, SCA1021

from

$68.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1052 (Part No.SCA1052)

Carquest Alternator Rectifier Bridge, SCA1052

from

$311.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1047 (Part No.SCA1047)

Carquest Alternator Rectifier Bridge, SCA1047

from

$65.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Most Popular Alternator Brackets for 1990 GMC C2500s

Enhance your 1990 GMC C2500 with one of the 4 Alternator Brackets we have in stock, starting at just $88.69.

Mr. Gasket – Mr. Gasket Chrome Low Mount Alternator Bracket – Small Block Chevy – Dress Up Your Engine!, 5179 (Part No.5179)

Mr. Gasket Chrome Low Mount Alternator Bracket - Small Block Chevy - Dress Up Your Engine!, 5179

from

$88.69
Mr. Gasket small block Chevy lower alternator mounting kit designed to work with a short water pump. Made of heavy gauge chrome plated steel. Complete with all necessary mounting hardware. Designed to relocate the alternator to the lower left side of the motor. This mounting bracket will make your engine compartment look neat and sanitary. Possible cross member interference on some applications.
See More

Top Street Performance – Top Street Performance Chevrolet Small Block Long Water Pump Chrome Aluminum10SI Alternator Bracket, JM9121C (Part No.JM9121C)

Top Street Performance Chevrolet Small Block Long Water Pump Chrome Aluminum10SI Alternator Bracket, JM9121C

from

$126.99
TSP’s billet aluminum brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. They are available in multiple high-quality finishes to match your desired aesthetic.
See More

Top Street Performance – Top Street Performance Chevrolet Small Block Long Water Pump Black Aluminum10SI Alternator Bracket, JM9121BK (Part No.JM9121BK)

Top Street Performance Chevrolet Small Block Long Water Pump Black Aluminum10SI Alternator Bracket, JM9121BK

from

$119.99
TSP’s billet aluminum brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. They are available in multiple high-quality finishes to match your desired aesthetic.
See More

Top Street Performance – Top Street Performance Chevrolet Small Block Long Water Pump Polished Aluminum10SI Alternator Bracket, JM9121P (Part No.JM9121P)

Top Street Performance Chevrolet Small Block Long Water Pump Polished Aluminum10SI Alternator Bracket, JM9121P

from

$113.99
TSP’s billet aluminum brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. They are available in multiple high-quality finishes to match your desired aesthetic.
See More

Best-Selling 1990 GMC C2500 Alternator Rectifiers

Upgrade your C2500 with one of our 2 best-selling Alternator Rectifiers.

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1021 (Part No.SCA1021)

Carquest Alternator Rectifier Bridge, SCA1021

from

$68.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Carquest Premium – Carquest Alternator Rectifier Bridge, SCA1047 (Part No.SCA1047)

Carquest Alternator Rectifier Bridge, SCA1047

from

$65.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
See More

Top-Quality Alternators for 1990 GMC C2500s

Choose a high-quality OEM or aftermarket Alternator for GMC C2500s and enjoy top-notch performance from $112.99.

Carquest Standard – Carquest Alternator: Remanufactured, 100 Amps, 7981-7AV (Part No.7981-7AV)

Carquest Alternator: Remanufactured, 100 Amps, 7981-7AV

from

$134.99
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.
See More

Carquest Standard – Carquest Alternator: Remanufactured, 105 Amps, 7861-11AV (Part No.7861-11AV)

Carquest Alternator: Remanufactured, 105 Amps, 7861-11AV

from

$116.99
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.
See More

Carquest Professional – Carquest Alternator: New, 100 Amps, 7861-7AN (Part No.7861-7AN)

Carquest Alternator: New, 100 Amps, 7861-7AN

from

$204.99
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.
See More

Carquest Professional – Carquest Alternator: New, 105 Amps, 7884-11AN (Part No.7884-11AN)

Carquest Alternator: New, 105 Amps, 7884-11AN

from

$199.99
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.
See More

Carquest Premium – Carquest Alternator: Remanufactured, 100 Amps, 7861-7A (Part No.7861-7A)

Carquest Alternator: Remanufactured, 100 Amps, 7861-7A

from

$148.99
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.
See More

Carquest Premium – Carquest Alternator: Remanufactured, 105 Amps, 7861-11A (Part No.7861-11A)

Carquest Alternator: Remanufactured, 105 Amps, 7861-11A

from

$149.99
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.
See More

Bosch – Bosch Alternator: New, 105 Amps, AL668N (Part No.AL668N)

Bosch Alternator: New, 105 Amps, AL668N

from

$174.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding driving conditions. Engineered with 100% new components, it is built to endure the harshest environments, ensuring optimal functionality and an extended lifespan. Designed to handle excessive heat and high electrical demands, this alternator provides consistent power with a 105-amp rating and 12 VDC output. Its clockwise rotation and precisely gauged, resized, or rethreaded mounting points ensure a perfect fit for seamless installation. As an added benefit, every purchase includes free 24-hour Roadside Assistance Protection, offering peace of mind on the road. Choose Bosch for a durable, high-performance alternator that keeps your vehicle running smoothly.
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Bosch – Bosch Alternator: New, 105 Amps, AL8670N (Part No.AL8670N)

Bosch Alternator: New, 105 Amps, AL8670N

from

$166.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for demanding driving conditions. Engineered with 100% new components, it is built to endure the harshest environments, ensuring optimal functionality and an extended lifespan. Designed to handle excessive heat and high electrical demands, this alternator is perfect for modern vehicles with advanced electrical systems. With a robust 105-amp output and 12 VDC voltage, it provides consistent power to keep your vehicle running smoothly. Precision-crafted mounting points are gauged, resized, or rethreaded for a perfect fit, ensuring hassle-free installation. Additionally, the purchase includes free 24-hour Roadside Assistance Protection, adding extra value and peace of mind. For drivers seeking durability, reliability, and superior performance, this alternator is an excellent investment.
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WAI – WAI Alternator: 100% NEW, 200 Amps, 7861-7N-HO (Part No.7861-7N-HO)

WAI Alternator: 100% NEW, 200 Amps, 7861-7N-HO

from

$211.99
This 100% NEW alternator from WAI is a premium choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. Its advanced voltage regulator protection guards against transient voltage spikes, preventing potential battery damage, while the low saturation voltage minimizes heat dissipation for enhanced durability. The high-power rectifier assembly, featuring open junction press-fit diodes, is designed to keep the unit running cool even under demanding conditions. Fully compliant with ECU communication, this alternator guarantees seamless integration with your vehicle’s system. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. Built for long-lasting efficiency, this alternator delivers exceptional value for your vehicle’s electrical system.
See More

Bosch – Bosch Alternator: Remanufactured, 105 Amps, AL668X (Part No.AL668X)

Bosch Alternator: Remanufactured, 105 Amps, AL668X

from

$156.99
The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 105-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for all your automotive needs. Engineered with precision, it features full-load testing to meet Bosch’s stringent performance standards and is 100% factory tested for quality assurance. Unlike rebuilt units, this alternator is remanufactured using high-quality materials and cutting-edge technology, ensuring long-lasting durability. Its clockwise rotation direction and advanced design make it a dependable replacement part that stands up to demanding conditions. Choose this alternator for a reliable, high-performance solution that keeps your vehicle running smoothly.
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Carquest Professional – Carquest Alternator: New, 120 Amps, 8101-1AN (Part No.8101-1AN)

Carquest Alternator: New, 120 Amps, 8101-1AN

from

$221.99
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.
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WAI – WAI Alternator: 100% NEW, 120 Amps, 7901-2N-5G (Part No.7901-2N-5G)

WAI Alternator: 100% NEW, 120 Amps, 7901-2N-5G

from

$284.99
This 100% NEW alternator from WAI is a premium choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. Its advanced voltage regulator protection guards against transient voltage spikes, preventing potential battery damage, while the low saturation voltage minimizes heat dissipation for enhanced durability. The high-power rectifier assembly, featuring open junction press-fit diodes, is designed to keep the unit running cool even under demanding conditions. Fully compliant with ECU communication, this alternator guarantees seamless integration with your vehicle’s system. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. Built for long-lasting efficiency, this alternator delivers exceptional value for your vehicle’s electrical system.
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Powermaster Performance – Powermaster Performance Alternator: CS130 Style, 6 Groove Pulley, 140 Amps, Left Mount, Natural, 47861 (Part No.47861)

Powermaster Performance Alternator: CS130 Style, 6 Groove Pulley, 140 Amps, Left Mount, Natural, 47861

from

$201.99
The Powermaster alternator is a high-performance solution designed for street applications, including muscle cars, classics, street rods, and daily drivers. Engineered with a CS130 left mount style, it delivers excellent idle output and features both internal and external fans for optimal cooling and efficiency. As the highest output small case Delco alternator, it ensures reliable power delivery while maintaining a compact design. The smooth back and gold battery post add a touch of durability and style, while the proof of performance tag guarantees its quality. Built with premium internal components, this alternator is highly efficient, making it a dependable choice for enhancing your vehicle’s electrical system.
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Carquest HD Electrical – Carquest Alternator: New, 105 Amps, With Pulley, 71-7861-7N-6G (Part No.71-7861-7N-6G)

Carquest Alternator: New, 105 Amps, With Pulley, 71-7861-7N-6G

from

$196.99
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.
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Carquest HD Electrical – Carquest Alternator: New, 105 Amps, With Pulley, 71-7861-11N-6G (Part No.71-7861-11N-6G)

Carquest Alternator: New, 105 Amps, With Pulley, 71-7861-11N-6G

from

$184.99
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.
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Carquest Premium – Carquest Alternator: Remanufactured, 85 Amps, 7885-11A (Part No.7885-11A)

Carquest Alternator: Remanufactured, 85 Amps, 7885-11A

from

$112.99
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.
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Our Top Pick for a 1990 GMC C2500 Alternator and Generator Brush Part

Invest in a durable Alternator and Generator Brush Part for your 1990 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Carquest Premium – Carquest Alternator Brush Set, XAC1066 (Part No.XAC1066)

Carquest Alternator Brush Set, XAC1066

from

$12.99
The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.
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Our Alternator Pigtails for 1990 GMC C2500s

Make a smart move for your 1990 GMC C2500 with our Alternator Pigtail for $19.99.

Carquest Premium – Carquest Multi-Use Connector, PTA1047 (Part No.PTA1047)

Carquest Multi-Use Connector, PTA1047

from

$19.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Top-Rated Alternator Part Brands For Your 1990 GMC C2500

When it comes to finding the perfect Alternator Part for your 1990 GMC C2500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Alternator Part brands including Carquest Professional, Carquest Premium, and Carquest, and more, all known for their exceptional customer ratings (average brand rating of 4.5 stars) and competitive prices, as low as $116.99. Purchasing a Alternator Part from us here at Advance Auto Parts is a smart move for both you and your 1990 GMC C2500, providing peace of mind with parts that meet or exceed OEM standards.

Popular Carquest Professional 1990 GMC C2500 Alternator Parts

If you’re looking for a top-quality Alternator Part for your 1990 GMC C2500, Advance Auto Parts has exactly what you need with our selection of Carquest Professional Alternator Parts. We have 2 Carquest Professional Alternator Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $199.99 and an average cost of $202.49, you’ll find the perfect Alternator Part for your needs and budget. Carquest Professional Alternator Parts for the 1990 GMC C2500 come highly rated, with over 53 customer reviews and an impressive average rating of 4.5 stars. Choosing a Carquest Professional Alternator Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Carquest Alternator: New, 105 Amps, 7884-11AN
from $199.99
(6)
Carquest Alternator: New, 105 Amps, 7884-11AN
“Exact replacement, easy to install, very satisfied”
Carquest Alternator: New, 100 Amps, 7861-7AN
from $204.99
(47)
Carquest Alternator: New, 100 Amps, 7861-7AN
“Have had the alternator in my truck for a month now. Have had no problems at all.”

Top-Quality Carquest Premium 1990 GMC C2500 Alternator Parts

For those in search of a high-quality Alternator Part for their 1990 GMC C2500, Advance Auto Parts offers a great selection of Carquest Premium Alternator Parts. With 1 Carquest Premium Alternator Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Alternator Parts start at just $148.99, giving you a range of options to suit your budget. Backed by over 18 customer ratings and an average rating of 4.5 stars, Carquest Premium Alternator Parts provide both reliability and excellent performance. Choosing a Carquest Premium Alternator Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Carquest Alternator: Remanufactured, 100 Amps, 7861-7A
from $148.99
(18)
Carquest Alternator: Remanufactured, 100 Amps, 7861-7A
“Great products”

FAQs for 1990 GMC C2500 Alternator Parts

What are the best-selling Alternator Parts for 1990 GMC C2500s?

Out of 24 Alternator Parts that fit 1990 GMC C2500s, the following parts are the top sellers:

What’s the price range for 1990 GMC C2500 Alternator Parts?

The prices of Alternator Parts for the 1990 GMC C2500 range from $12.99 up to $284.99 for the most premium parts.

What is the average price of an Alternator Part for a 1990 GMC C2500?

The average price for Alternator Parts for the 1990 GMC C2500 is $132.76. Keep in mind the variety of part types within our Alternator Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Alternator Parts for other GMC C2500 model years?

Yes, we carry Alternator Parts for 19 model years of GMC C2500s between 1979 and 2000. The following model years are the most popular for Alternator Part purchases: 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, and 1992.

What are the cheapest Alternator Parts for my 1990 GMC C2500?

Does Advance Auto Parts sell Alternator Parts for any other 1990 GMC models?

Yes. We stock Alternator Parts for 23 other popular 1990 GMC models. Some of the most popular are 1990 Jimmy Alternator Parts, 1990 K2500 Alternator Parts, 1990 K1500 Alternator Parts, 1990 C1500 Alternator Parts, and 1990 K3500 Alternator Parts.

What are the top-rated Alternator Parts that fit the 1990 GMC C2500?

The one 1990 GMC C2500 Alternator Part we have in stock is the Carquest Alternator Brush Set, XAC1066. It costs $12.99.

What types of Alternator Parts do you sell for my 1990 GMC C2500?

As of 8/2/26, these are some of the most in-demand types of Alternator Parts for a 1990 GMC C2500:

Can I get help with 1990 GMC C2500 Alternator Part orders?

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

What is your return policy for GMC C2500 Alternator Parts?

Advance Auto Parts keeps returns simple. For new GMC C2500 Alternator Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.