1977 Mazda Cosmo Expansion Plugs

Enhance and Protect Your 1977 Mazda Cosmo with Quality Expansion Plugs

Maintaining the performance of your 1977 Mazda Cosmo starts with choosing the right parts, and a high-quality Expansion Plug helps ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Expansion Plugs specifically for the 1977 Mazda Cosmo, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Expansion Plugs for Every Budget

Finding an Expansion Plug that combines quality with affordability is easy at Advance Auto Parts. With prices starting as low as $1.29 and an average price of $2.22, you can choose one that fits your budget while delivering the quality you expect. Our Expansion Plugs are competitively priced, ranging from $1.29 to $3.49, so you get value without compromising on strength or reliability.

Trusted Brands and Top-Rated Options

With 6 Expansion Plugs from 1 trusted brands in stock, Advance Auto Parts has you covered. Our Expansion Plugs for the 1977 Mazda Cosmo have earned reviews from over 2 customers, with an average 3 stars rating across the board. Popular options include Steel Cup Expansion Plug 35.21mm, Height 0.380, Steel Cup Expansion Plug 35.21mm, Height 0.380 (sold by each), and Steel Cup Expansion Plug 40.08mm, Height 0.450 (sold by each), starting at $1.29. Our selection includes highly regarded brands such as Dorman, and more, offering you top-notch reliability. For example, we have 6 Dorman Expansion Plugs starting at $1.29 with an average rating of 4 stars.

Expansion Plugs for Your 1977 Mazda Cosmo

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 35.21mm, Height 0.380 (Part No.362648.1)

Steel Cup Expansion Plug 35.21mm, Height 0.380

from

$2.29
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

Dorman – Steel Cup Expansion Plug 40.08mm, Height 0.450 (sold by each) (Part No.555-095)

Steel Cup Expansion Plug 40.08mm, Height 0.450 (sold by each)

from

$1.29
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

Dorman – Steel Cup Expansion Plug 35.21mm, Height 0.380 (sold by each) (Part No.555-093)

Steel Cup Expansion Plug 35.21mm, Height 0.380 (sold by each)

from

$1.49
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 40.08mm, Height 0.450 (Part No.362780.1)

Steel Cup Expansion Plug 40.08mm, Height 0.450

from

$3.49
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

Dorman – Steel Cup Expansion Plug 40.08mm, Height 0.450 (Part No.555-095.1)

Steel Cup Expansion Plug 40.08mm, Height 0.450

from

$2.49
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

Dorman – Steel Cup Expansion Plug 35.21mm, Height 0.380 (Part No.555-093.1)

Steel Cup Expansion Plug 35.21mm, Height 0.380

from

$2.29
This engine expansion plug 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 engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

FAQs for 1977 Mazda Cosmo Expansion Plugs

Which Expansion Plugs are the top sellers for the 1977 Mazda Cosmo?

Out of 6 Expansion Plugs that fit 1977 Mazda Cosmos, the following parts are the top sellers:
Steel Cup Expansion Plug 35.21mm, Height 0.380
from $2.29
(2)
Steel Cup Expansion Plug 35.21mm, Height 0.380
Expansion Plugs
Steel Cup Expansion Plug 35.21mm, Height 0.380 (sold by each)
from $1.49
This product is not rated
Steel Cup Expansion Plug 35.21mm, Height 0.380 (sold by each)
Expansion Plugs
Steel Cup Expansion Plug 40.08mm, Height 0.450 (sold by each)
from $1.29
This product is not rated
Steel Cup Expansion Plug 40.08mm, Height 0.450 (sold by each)
Expansion Plugs

How can I make sure that a part will be compatible with my 1977 Mazda Cosmo?

Our Mazda Cosmo aftermarket and OEM parts are designed specifically for the 1977 model. You can always find your specific fitment and compatibility for your 1977 Mazda on an individual product page.

What is the price range for 1977 Mazda Cosmo Expansion Plugs?

The range of prices of Expansion Plugs for the 1977 Mazda Cosmo goes from $1.29 up to $3.49 for the most premium parts.

What is the average price of a 1977 Mazda Cosmo Expansion Plug?

1977 Mazda Cosmo Expansion Plugs average $2.22 for our selection of OEM and aftermarket parts. Keep in mind the variety of brands we offer, such as Dorman, and more, so you are likely to find a wide range of prices across a variety of brands and products.

Does Advance Auto Parts sell Expansion Plugs for other Mazda Cosmo model years?

Yes, we currently stock Expansion Plugs for 2 model years of Mazda Cosmos, from 1976 to 1978. Model years 1978 and 1976 are the most popular for Expansion Plug purchases.

Can I get help with 1977 Mazda Cosmo Expansion Plug orders?

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

What is your return policy for Mazda Cosmo Expansion Plugs?

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