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555 SEN121 Steel Cup Expansion Plug

Manufacturer

Picture for manufacturer 555

Part Number

SEN121
5 reviews
Sale Price

$34.48

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The 555 SEN121 is a steel cup expansion plug designed to seal engine block core holes and prevent coolant leaks. This precision-engineered freeze plug provides a reliable seal in engine applications where core plugs are needed.

Key Features:

  • Steel cup construction for durability and heat resistance
  • Precision-formed design ensures proper fit and seal
  • Corrosion-resistant finish for long service life
  • Direct replacement for worn or damaged expansion plugs

Expansion plugs, also known as freeze plugs or core plugs, are essential engine components that seal the core holes left during the casting process. This plug helps maintain proper engine cooling system pressure and prevents coolant loss.

Great

Fast and simple, excellent price and free shipping.

Finally a business that ships to Alaska. You will definitely have my business in the future.

I shows that it is "in stock" and that it will "ship immediately"... We'll see what happens.

easy checkout

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Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy