1977 Mazda Cosmo Automatic Transmission Parts

Keep Your 1977 Mazda Cosmo in Top Shape with Quality Automatic Transmission Parts

Whether you’re repairing or upgrading your Automatic Transmission Part, using high-quality parts is key to keeping your 1977 Mazda Cosmo looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transmission Modulator Valves. 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 1977 Mazda Cosmo Automatic Transmission Part at Advance Auto Parts is around $39.66, with a range that starts at $24.99 and goes up to $53.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Automatic Transmission Vacuum Modulator, Automatic Transmission Vacuum Modulator, and Automatic Transmission Modulator Valve start at just $24.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Automatic Transmission Part, don’t forget to check out other key components like Torque Converter and Related Products and Transmission Cooler and Parts. At Advance Auto Parts, we’re here to help you keep your 1977 Mazda Cosmo in peak condition, inside and out.

Essential 1977 Mazda Cosmo Automatic Transmission Parts

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-30)

Automatic Transmission Vacuum Modulator

from

$24.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
See More

Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMA1002)

Automatic Transmission Modulator Valve

from

$53.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.

Product Features:
  • Application matched component ensures the transmission gear position system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • This part will look and function just like the original unit being replaced.
See More

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-29)

Automatic Transmission Vacuum Modulator

from

$39.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
See More

Most Popular Transmission Modulator Valves for 1977 Mazda Cosmos

Enhance your 1977 Mazda Cosmo with one of the 3 Transmission Modulator Valves we have in stock, starting at just $24.99.

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-29)

Automatic Transmission Vacuum Modulator

from

$39.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
See More

Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMA1002)

Automatic Transmission Modulator Valve

from

$53.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.

Product Features:
  • Application matched component ensures the transmission gear position system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • This part will look and function just like the original unit being replaced.
See More

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-30)

Automatic Transmission Vacuum Modulator

from

$24.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
See More

FAQs for 1977 Mazda Cosmo Automatic Transmission Parts

What are the best-selling Automatic Transmission Parts for 1977 Mazda Cosmos?

Out of 3 Automatic Transmission Parts that fit 1977 Mazda Cosmos, the following parts are the top sellers:

What’s the price range for 1977 Mazda Cosmo Automatic Transmission Parts?

The prices of Automatic Transmission Parts for the 1977 Mazda Cosmo range from $24.99 up to $53.99 for the most premium parts.

What is the average price of an Automatic Transmission Part for a 1977 Mazda Cosmo?

The average price for Automatic Transmission Parts for the 1977 Mazda Cosmo is $39.66. Keep in mind the variety of part types within our Automatic Transmission Part category, where you are likely to find a wide range of prices across a variety of parts and components.

What are the cheapest Automatic Transmission Parts for my 1977 Mazda Cosmo?

The cheapest 1977 Mazda Cosmo Automatic Transmission Parts we carry are:

Does Advance Auto Parts sell Automatic Transmission Parts for any other 1977 Mazda models?

What types of Automatic Transmission Parts do you sell for my 1977 Mazda Cosmo?

We currently have just 1 Automatic Transmission Part in stock for a 1977 Mazda Cosmo, and as of 11/2/25, it is a Transmission Modulator Valve.

Can I get help with 1977 Mazda Cosmo Automatic Transmission Part orders?

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

What is your return policy for Mazda Cosmo Automatic Transmission Parts?

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