1978 Fiat X-1/9 Freeze and Expansion Plugs

Keep Your 1978 Fiat X-1/9 in Top Shape with Quality Freeze and Expansion Plugs

Whether you’re repairing or upgrading your Freeze and Expansion Plug, using high-quality parts is key to keeping your 1978 Fiat X-1/9 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Expansion Plugs and Rubber Freeze Plugs. 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 Fiat X-1/9 Freeze and Expansion Plug at Advance Auto Parts is around $5.32, with a range that starts at $1.29 and goes up to $14.99. With 4 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Steel Cup Expansion Plug 1-1/2 In., Height 0.570, Rubber Expansion Plug 1-1/2 In. – Size Range 1-1/2 In. – 1-5/8 In. (Sold by each), and Steel Cup Expansion Plug 1-1/2 In., Height 0.570 start at just $1.29 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Freeze and Expansion Plug, don’t forget to check out other key components like Engine Blocks and Engine Internals. At Advance Auto Parts, we’re here to help you keep your 1978 Fiat X-1/9 in peak condition, inside and out.

Essential 1978 Fiat X-1/9 Freeze and Expansion Plugs

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-1/2 In., Height 0.570 (Part No.362654.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.570

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 1-1/2 In., Height 0.570 (Part No.555-027.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.570

from

$2.99
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 1-1/2 In., Height 0.570 (sold by each) (Part No.555-027)

Steel Cup Expansion Plug 1-1/2 In., Height 0.570 (sold by each)

from

$1.99
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 – Rubber Expansion Plug 7/8 In. – Size Range 7/8 In. – 1 In. (sold by each) (Part No.570-004)

Rubber Expansion Plug 7/8 In. - Size Range 7/8 In. - 1 In. (sold by each)

from

$11.99
This engine intake manifold 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 intake manifold 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 – Rubber Expansion Plug 1-1/2 In. – Size Range 1-1/2 In. – 1-5/8 In. (Sold by each) (Part No.570-009)

Rubber Expansion Plug 1-1/2 In. - Size Range 1-1/2 In. - 1-5/8 In. (Sold by each)

from

$14.99
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

Most Popular Expansion Plugs for 1978 Fiat X-1/9s

Enhance your 1978 Fiat X-1/9 with one of the 3 Expansion Plugs we have in stock, starting at just $1.29.

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-1/2 In., Height 0.570 (Part No.362654.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.570

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 1-1/2 In., Height 0.570 (Part No.555-027.1)

Steel Cup Expansion Plug 1-1/2 In., Height 0.570

from

$2.99
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 1-1/2 In., Height 0.570 (sold by each) (Part No.555-027)

Steel Cup Expansion Plug 1-1/2 In., Height 0.570 (sold by each)

from

$1.99
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

Best-Selling 1978 Fiat X-1/9 Rubber Freeze Plug

Upgrade your X-1/9 with our best-selling Rubber Freeze Plug.

Dorman – Rubber Expansion Plug 1-1/2 In. – Size Range 1-1/2 In. – 1-5/8 In. (Sold by each) (Part No.570-009)

Rubber Expansion Plug 1-1/2 In. - Size Range 1-1/2 In. - 1-5/8 In. (Sold by each)

from

$14.99
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 1978 Fiat X-1/9 Freeze and Expansion Plugs

What are the best-selling Freeze and Expansion Plugs for 1978 Fiat X-1/9s?

Out of 4 Freeze and Expansion Plugs that fit 1978 Fiat X-1/9s, the following parts are the top sellers:

What’s the price range for 1978 Fiat X-1/9 Freeze and Expansion Plugs?

The prices of Freeze and Expansion Plugs for the 1978 Fiat X-1/9 range from $1.29 up to $14.99 for the most premium parts.

What is the average price of a Freeze and Expansion Plug for a 1978 Fiat X-1/9?

The average price for Freeze and Expansion Plugs for the 1978 Fiat X-1/9 is $5.32. Keep in mind the variety of part types within our Freeze and Expansion Plug category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Freeze and Expansion Plugs for other Fiat X-1/9 model years?

Yes, we carry Freeze and Expansion Plugs for 6 model years of Fiat X-1/9s between 1974 and 1983. The following model years are the most popular for Freeze and Expansion Plug purchases: 1983, 1980, 1979, 1977, 1976, 1975, and 1974.

What are the cheapest Freeze and Expansion Plugs for my 1978 Fiat X-1/9?

Does Advance Auto Parts sell Freeze and Expansion Plugs for any other 1978 Fiat models?

Yes. We stock Freeze and Expansion Plugs for 2 other popular 1978 Fiat models. Some of the most popular are 1978 124 Freeze and Expansion Plugs, 1978 128 Freeze and Expansion Plugs, and 1978 131 Freeze and Expansion Plugs.

What types of Freeze and Expansion Plugs do you sell for my 1978 Fiat X-1/9?

As of 11/2/25, these are some of the most in-demand types of Freeze and Expansion Plugs for a 1978 Fiat X-1/9:

Can I get help with 1978 Fiat X-1/9 Freeze and Expansion Plug orders?

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

What is your return policy for Fiat X-1/9 Freeze and Expansion Plugs?

Advance Auto Parts keeps returns simple. For new Fiat X-1/9 Freeze and Expansion Plugs and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.