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What is a frost plug?

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Anonymous

17y ago
Updated: 4/28/2022

Freeze plugs? These are holes in engine block that were required to "cast" the engine upon manufacture. Plugs were installed at the end of this process. These plugs are designed to "POP" out if the engine freezes due to lack of antifreeze. They can save the engine from requiring total replacement if this condition happens

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Wiki User

17y ago

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