1978 Mazda Cosmo Alternator Parts

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Keep Your 1978 Mazda Cosmo 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 1978 Mazda Cosmo looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Alternator Rectifiers, Alternator Bearings, and Alternator Miscellaneous Parts. 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.

Competitive Prices and Extensive Inventory

The average price for a 1978 Mazda Cosmo Alternator Part at Advance Auto Parts is around $38.15, with a range that starts at $15.99 and goes up to $92.99. With 5 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Bearings, Bearing – DGBB (Deep Groove Ball Bearing), and Alternator Rectifier Bridge start at just $16.29 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Alternator Part, don’t forget to check out other key components like Starter Parts. At Advance Auto Parts, we’re here to help you keep your 1978 Mazda Cosmo in peak condition, inside and out.

Essential 1978 Mazda Cosmo Alternator Parts

Driveworks – Ball Bearing (Part No.SL-203-FF)

Ball Bearing

from

$13.49
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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National – Multi-Purpose Bearing (Part No.201-CC)

Multi-Purpose Bearing

from

$15.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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

Schaeffler – Bearing (Part No.6305)

Bearing

from

$24.49
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

Carquest Premium – Alternator Rectifier Bridge (Part No.XAC1233)

Alternator Rectifier Bridge

from

$92.99
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

National – Multi-Purpose Bearing (Part No.203-FF)

Multi-Purpose Bearing

from

$12.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Schaeffler – Bearing – DGBB (Deep Groove Ball Bearing) (Part No.6202-2Z)

Bearing - DGBB (Deep Groove Ball Bearing)

from

$16.29
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • Radial Ball Bearing, Both Sides Shield.
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

Most Popular Alternator Rectifier for 1978 Mazda Cosmos

Enhance your 1978 Mazda Cosmo with this popular Alternator Rectifier we have in stock, for $92.99.

Carquest Premium – Alternator Rectifier Bridge (Part No.XAC1233)

Alternator Rectifier Bridge

from

$92.99
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

Best-Selling 1978 Mazda Cosmo Alternator Bearing

Upgrade your Cosmo with our best-selling Alternator Bearing.

Schaeffler – Bearing (Part No.6305)

Bearing

from

$24.49
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

Top-Quality Alternator Miscellaneous Parts for 1978 Mazda Cosmos

Choose a high-quality OEM or aftermarket Alternator Miscellaneous Part for Mazda Cosmos and enjoy top-notch performance from $40.99.

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

Our Top Pick for a 1978 Mazda Cosmo Commutator End Bearing

Invest in a durable Commutator End Bearing for your 1978 Mazda, knowing you’re getting trusted brands and expert craftsmanship.

National – Multi-Purpose Bearing (Part No.201-CC)

Multi-Purpose Bearing

from

$15.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Our Drive End Bearings for 1978 Mazda Cosmos

Make a smart move for your 1978 Mazda Cosmo with our Drive End Bearing for $16.29.

Schaeffler – Bearing – DGBB (Deep Groove Ball Bearing) (Part No.6202-2Z)

Bearing - DGBB (Deep Groove Ball Bearing)

from

$16.29
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • Radial Ball Bearing, Both Sides Shield.
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

FAQs for 1978 Mazda Cosmo Alternator Parts

What are the best-selling Alternator Parts for 1978 Mazda Cosmos?

Out of 5 Alternator Parts that fit 1978 Mazda Cosmos, the following parts are the top sellers:

What’s the price range for 1978 Mazda Cosmo Alternator Parts?

The prices of Alternator Parts for the 1978 Mazda Cosmo range from $15.99 up to $92.99 for the most premium parts.

What is the average price of an Alternator Part for a 1978 Mazda Cosmo?

The average price for Alternator Parts for the 1978 Mazda Cosmo is $38.15. 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.

What are the cheapest Alternator Parts for my 1978 Mazda Cosmo?

The cheapest 1978 Mazda Cosmo Alternator Parts we carry are:

Does Advance Auto Parts sell Alternator Parts for any other 1978 Mazda models?

Yes. We stock Alternator Parts for 3 other popular 1978 Mazda models. Some of the most popular are 1978 GLC Alternator Parts, 1978 RX-3 Alternator Parts, 1978 RX-4 Alternator Parts, and 1978 B1800 Alternator Parts.

What are the top-rated Alternator Parts that fit the 1978 Mazda Cosmo?

The one 1978 Mazda Cosmo Alternator Part we have in stock is the Multi-Purpose Bearing. It is rated 2.5 stars and costs $15.99.

What types of Alternator Parts do you sell for my 1978 Mazda Cosmo?

As of 3/1/26, these are some of the most in-demand types of Alternator Parts for a 1978 Mazda Cosmo:

Can I get help with 1978 Mazda Cosmo Alternator Part orders?

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

What is your return policy for Mazda Cosmo Alternator Parts?

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