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What is a frost plug?

Updated: 4/28/2022
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16y ago

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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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Q: What is a frost plug?
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Is there a block heater frost plug on a 1997 geo tracker If so where is it?

The 1997 Geo Tracker block heater does have a frost plug. The Frost plug will be a few inches below the block heater.


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