1978 GMC P25 Alternators and Starters

Essential 1978 GMC P25 Alternators and Starters

National – Bearings (Part No.MNJ-471-S)

Bearings

from

$14.29
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Available in both caged design and full complement
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Carquest Premium – Starter Remanufactured Premium (Part No.3510S)

Starter Remanufactured Premium

from

$81.99
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 Lifetime 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:
  • 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
See More

WAI – Starter – 100% NEW (Part No.3686N)

Starter - 100% NEW

from

$132.99
WAI is a leading parts manufacturer for the aftermarket. You’ll find superior quality and performance on all WAI 100% new alternators and starters as well as generators, motors, voltage regulators, rectifiers and other components for the Rotating Electri

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 strenght 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.
See More

Carquest – Alternator Electrical Connector (Part No.PT68)

Alternator Electrical Connector

from

$4.29
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation
  • Featuring the broadest sensor coverage in the market, we meet the service professionals needs with the highest quality product every time he opens the box
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Carquest Premium – Alternator Connector (Part No.PTA1031)

Alternator Connector

from

$4.29
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

National – Bearings (Part No.305)

Bearings

from

$40.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

National – Bearings (Part No.203-S)

Bearings

from

$21.49
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Carquest – Starter Brush Set (Part No.X265)

Starter Brush Set

from

$6.29
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Carquest Premium – Starter Brush (Part No.XAA1014)

Starter Brush

from

$5.29
The starting system consists of the rotating electrical motor and solenoid which may be mounted on the starter motor or mounted remotely. The electric motor drives a gear which engages with the engine’s flywheel located at the rear of the motor, when the motor is energized, the motor will turn the engines crankshaft. Individual motor components are available to service any failed part within the motor such as brushes, bushings, and starter drive unit.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
See More

Carquest Premium – Suspension Yaw Sensor (Part No.PTA1165)

Suspension Yaw Sensor

from

$11.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest – Voltage Regulator (Part No.R291)

Voltage Regulator

from

$28.99
Product Features:
  • Our Throttle Position Sensors maintain specific installed outputs to match OE rather than adjustable consolidated designs
  • Circuits are printed on flexible polyimide film or ceramic-based substrates for excellent dimensional stability preventing electrical performance drift. Noble palladium/gold/platinum alloys provide low contact resistance for extended service life
  • Each TPS uses integral rotor bearings and return springs for easy installation
  • Each sensor undergoes rigorous end-of-line testing with thousands of data points to validate output voltages for optimum performance and trouble-free operation
See More

Carquest Premium – Voltage Regulator (Part No.RAA1056)

Voltage Regulator

from

$14.49
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST volt

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
See More

Dorman – Help – Offset Starter Alignment Shim, (1) 1/64, (1) 3/64, (1) 1/16 In., GM (Part No.02350)

Offset Starter Alignment Shim, (1) 1/64, (1) 3/64, (1) 1/16 In., GM

from

$7.99
Our Starter Motor Shims are manufactured with a high corrosion resistance for long-lasting performance. The shims effectively space out the starter for proper alignment.

Product Features:
  • Conveniently available in various styles and in packs of different quantities
  • High quality steel construction
  • Shimming helps stop whining and/or grinding noises from the starter motor when due to improper alignment
  • Dorman’s Starter Motor Shims are constructed to strict engineering quality standards
See More

Carquest – Starter Solenoid (Part No.84C1005)

Starter Solenoid

from

$25.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest Premium – Starter Solenoid (Part No.SAC1146)

Starter Solenoid

from

$36.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest – Alternator Brush Set (Part No.X311)

Alternator Brush Set

from

$12.99
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Carquest Premium – Alternator Brush Set (Part No.XAA1042)

Alternator Brush Set

from

$10.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

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

Alternator: Remanufactured, 63 Amps

from

$61.99
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:
  • Designed to meet OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Premium – Alternator: Remanufactured, 80 Amps (Part No.7135MA)

Alternator: Remanufactured, 80 Amps

from

$147.99
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

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

Alternator Rectifier Bridge

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.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

Carquest Premium – Alternator Diode Trio (Part No.SCA1002)

Alternator Diode Trio

from

$6.99
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.

Product Features:
  • Application matched components ensure the charging system can be returned to like new condition.
See More

GM Genuine Parts – Ignition Lock Cylinder: Keys Included, Mounting Hardware Not Included (Part No.D1499A)

Ignition Lock Cylinder: Keys Included, Mounting Hardware Not Included

from

$22.79
GM Genuine Parts Ignition Lock Cylinders are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These cylindrical tumblers are used to help power on and start your vehicle. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Helps power on and start your vehicle
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Collision parts are designed to help promote proper and safe repair
See More

Carquest Premium – Ignition Lock Cylinder CSA1672 (Part No.CSA1672)

Ignition Lock Cylinder CSA1672

from

$25.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
See More

GM Genuine Parts – Ignition Lock Cylinder with Key (Part No.D1402B)

Ignition Lock Cylinder with Key

from

$40.99
Ignition Lock Cylinder with Key
See More

Carquest Premium – Ignition Lock Cylinder CSA1517 (Part No.CSA1517)

Ignition Lock Cylinder CSA1517

from

$17.29
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
See More

Locksmart – Ignition Lock Cylinder (Part No.LC14220)

Ignition Lock Cylinder

from

$16.05
LockSmart® is a specialized aftermarket lock brand featuring door, trunk, and ignition lock cylinders. LockSmart® provides OE fit, form, and function locks across domestic and import applications for both late and older model vehicles.

Product Features:
  • Direct-fit OE replacement ignition lock cylinder ensures effective start of engine energy supply
  • Constructed from high-grade materials to ensure durability and longevity
  • Undergoes 100% testing for proper fit, form, and function
  • As a global manufacturer, we maintain complete quality control throughout the manufacturing process
See More

Carquest – Ignition Lock Cylinder (Part No.CS132L)

Ignition Lock Cylinder

from

$25.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • Professional quality construction using solid brass tumblers, chrome plated brass keys, die-cast zinc lock cores and multiple, randomly assigned key codes ensures superior operation
  • Decades of industry leading research and development focused on meeting the technician’s needs
  • With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Carquest Premium – Ignition Lock Cylinder CSC1733 (Part No.CSC1733)

Ignition Lock Cylinder CSC1733

from

$25.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the connector terminal design process ensures speed-to-market and a precise connector fit guaranteed.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
See More

1978 GMC P25 Alternators and Starters

You count on your 1978 GMC P25 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Alternators and Starters. With 50 Alternators and Starters ranging in price from $4.29 to $228.99, you’re sure to find everything you need for your 1978 GMC P25.

Brands matter. If you want to shop a specific Alternators and Starters brand, we stock 11 different brands like Carquest, Carquest Premium, and Dorman. 1978 GMC P25 Alternators and Starters start as low as $4.29!

One of the best ways to find top quality OEM or aftermarket Alternators and Starters is by asking professionals. Short of that, you can shop with confidence thanks to our 325 extensive product reviews on 1978 GMC P25 Alternators and Starters. Some of the top-rated Alternators and Starters products we carry are Alternator: Remanufactured, 63 Amps with 4.6 stars and Alternator: Remanufactured, 63 Amps with 3.6 stars.

Did we mention you can order your Alternators and Starters from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Alternators and Starters inventory for your 1978 GMC P25 below to get started!

Top-Rated Alternators and Starters Brands For Your 1978 GMC P25

Trusted Alternators and Starters OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1978 GMC P25 running right for years to come. In our inventory you’ll find brands like Carquest, Carquest Premium, Dorman, and even more.

Popular Carquest Professional Alternators and Starters

You’ll find popular Carquest Professional brand products across Alternator Parts and Starter Parts. All are waiting to get your 1978 GMC P25 back on the road. Some of the top-rated Carquest Professional products in these categories are:
Alternator: New, 63 Amps
from $104.99
(1)
Alternator: New, 63 Amps
Alternators
Starter-New
from $228.99
(1)
Starter-New
Starters

FAQs for 1978 GMC P25 Alternators and Starters

What are the most purchased Alternators and Starters for the 1978 GMC P25?

Out of 50 Alternators and Starters for the 1978 GMC P25, the most popular in our inventory are:
Alternator: Remanufactured, 63 Amps
from $89.99
(57)
Alternator: Remanufactured, 63 Amps
Alternators
Alternator: Remanufactured, 63 Amps
from $108.99
(2)
Alternator: Remanufactured, 63 Amps
Alternators

What are the top-rated 1978 GMC P25 Alternators and Starters?

Top-rated Alternators and Starters for your 1978 GMC P25 based on customer reviews/ratings are:
Alternator: Remanufactured, 63 Amps
from $89.99
(11)
Alternator: Remanufactured, 63 Amps
“Bought this due to bearings going out in old alternator(Squealed and wouldn’t charge all the time)! It was easy to install and at a great price! My ”
Alternator: Remanufactured, 63 Amps
from $61.99
(5)
Alternator: Remanufactured, 63 Amps
“Installed on ’79 C10 easily. So far it’s been doing great . No complaints as of yet, but it’s only been a few days.”
Starter Solenoid
from $32.05
(4)
Starter Solenoid
“This package no longer includes the spring and terminal bolt package, so if you need those you may need a different brand.”