1946 Oldsmobile Series 66 Valve Cover and Cylinder Heads

Keep Your 1946 Oldsmobile Series 66 in Top Shape with Quality Valve Cover and Cylinder Heads

Whether you’re repairing or upgrading your Valve Cover and Cylinder Head, using high-quality parts is key to keeping your 1946 Oldsmobile Series 66 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rocker Arm Shaft 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 1946 Oldsmobile Series 66 Valve Cover and Cylinder Head at Advance Auto Parts is around $1.54, with a range that starts at $1.29 and goes up to $1.79. With 2 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Steel Cup Expansion Plug 9/16 In., Height 0.250 (sold by each) and Steel Cup Expansion Plug 13.70mm, Height 0.180 (Sold by each) start at just $1.29 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Valve Cover and Cylinder Head, don’t forget to check out other key components like Engine Gaskets and Seals and Oil Cooler Parts. At Advance Auto Parts, we’re here to help you keep your 1946 Oldsmobile Series 66 in peak condition, inside and out.

Essential 1946 Oldsmobile Series 66 Valve Cover and Cylinder Heads

Dorman – Steel Cup Expansion Plug 9/16 In., Height 0.250 (sold by each) (Part No.555-008)

Steel Cup Expansion Plug 9/16 In., Height 0.250 (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 13.70mm, Height 0.180 (Sold by each) (Part No.555-007)

Steel Cup Expansion Plug 13.70mm, Height 0.180 (Sold by each)

from

$1.79
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

Most Popular Rocker Arm Shaft Plugs for 1946 Oldsmobile Series 66s

Enhance your 1946 Oldsmobile Series 66 with one of the 2 Rocker Arm Shaft Plugs we have in stock, starting at just $1.29.

Dorman – Steel Cup Expansion Plug 9/16 In., Height 0.250 (sold by each) (Part No.555-008)

Steel Cup Expansion Plug 9/16 In., Height 0.250 (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 13.70mm, Height 0.180 (Sold by each) (Part No.555-007)

Steel Cup Expansion Plug 13.70mm, Height 0.180 (Sold by each)

from

$1.79
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 1946 Oldsmobile Series 66 Valve Cover and Cylinder Heads

What are the best-selling Valve Cover and Cylinder Heads for 1946 Oldsmobile Series 66s?

Out of 2 Valve Cover and Cylinder Heads that fit 1946 Oldsmobile Series 66s, the following parts are the top sellers:

What’s the price range for 1946 Oldsmobile Series 66 Valve Cover and Cylinder Heads?

The prices of Valve Cover and Cylinder Heads for the 1946 Oldsmobile Series 66 range from $1.29 up to $1.79 for the most premium parts.

What is the average price of a Valve Cover and Cylinder Head for a 1946 Oldsmobile Series 66?

The average price for Valve Cover and Cylinder Heads for the 1946 Oldsmobile Series 66 is $1.54. Keep in mind the variety of part types within our Valve Cover and Cylinder Head category, where you are likely to find a wide range of prices across a variety of parts and components.

What are the cheapest Valve Cover and Cylinder Heads for my 1946 Oldsmobile Series 66?

The cheapest 1946 Oldsmobile Series 66 Valve Cover and Cylinder Heads we carry are:

Does Advance Auto Parts sell Valve Cover and Cylinder Heads for any other 1946 Oldsmobile models?

Yes. We stock Valve Cover and Cylinder Heads for 3 other popular 1946 Oldsmobile models. Some of the most popular are 1946 Series 98 Valve Cover and Cylinder Heads, 1946 Series 78 Valve Cover and Cylinder Heads, 1946 Series 76 Valve Cover and Cylinder Heads, and 1946 Series 60 Valve Cover and Cylinder Heads.

What types of Valve Cover and Cylinder Heads do you sell for my 1946 Oldsmobile Series 66?

We currently have just 1 Valve Cover and Cylinder Head in stock for a 1946 Oldsmobile Series 66, and as of 11/2/25, it is a Rocker Arm Shaft Plug.

Can I get help with 1946 Oldsmobile Series 66 Valve Cover and Cylinder Head orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Oldsmobile Valve Cover and Cylinder Heads and more.

What is your return policy for Oldsmobile Series 66 Valve Cover and Cylinder Heads?

Advance Auto Parts keeps returns simple. For new Oldsmobile Series 66 Valve Cover and Cylinder Heads and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.