1978 Chevrolet K20 Expansion Plugs

Your 1978 Chevrolet K20 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Expansion Plugs you desperately need.

We currently carry 6 Expansion Plugs to choose from for your 1978 Chevrolet K20, and our inventory prices range from as little as $0.99 up to $16.99.

On top of low prices, Advance Auto Parts offers 2 different trusted brands of Expansion Plugs for the 1978 Chevrolet K20. We only sell parts from trusted brands like Dorman so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 12 reviews on our Expansion Plugs for the 1978 Chevrolet K20 from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Expansion Plugs stock in-person!

Expansion Plugs for Your 1978 Chevrolet K20

Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (Part No.362657.1)

Steel Cup Expansion Plug 1-5/8 In., Height 0.500

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
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Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-3/4 In., Height 0.430 (Part No.362664.1)

Steel Cup Expansion Plug 1-3/4 In., Height 0.430

from

$0.99
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 1-3/4 In., Height 0.430 (sold by each) (Part No.555-034)

Steel Cup Expansion Plug 1-3/4 In., Height 0.430 (sold by each)

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 2-1/64 In., Height 0.650 (sold by each) (Part No.555-045)

Steel Cup Expansion Plug 2-1/64 In., Height 0.650 (sold by each)

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

Sealed Power – BRASS EXP PLUG KIT (Part No.381-8007)

BRASS EXP PLUG KIT

from

$16.99
Sealed Power parts provide innovative designs, use leading-edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Made with brass
  • Resistant to rusting
  • ISO & QS certified manufacturing
  • For applications over 35 years old
  • Meets or exceeds OEM specifications
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Dorman – Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (Part No.555-030.1)

Steel Cup Expansion Plug 1-5/8 In., Height 0.500

from

$2.79
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 Chevrolet K20 Expansion Plugs

What are the most popular Expansion Plugs for the 1978 Chevrolet K20?

With 2 brands you can trust, our most popular Expansion Plugs for the 1978 Chevrolet K20 parts are:
Steel Cup Expansion Plug 1-5/8 In., Height 0.500
from $2.29
(1)
Steel Cup Expansion Plug 1-5/8 In., Height 0.500
Expansion Plugs
Steel Cup Expansion Plug 1-3/4 In., Height 0.430
from $0.99
This product is not rated
Steel Cup Expansion Plug 1-3/4 In., Height 0.430
Expansion Plugs
Steel Cup Expansion Plug 1-3/4 In., Height 0.430 (sold by each)
from $2.29
This product is not rated
Steel Cup Expansion Plug 1-3/4 In., Height 0.430 (sold by each)
Expansion Plugs