Its a doojigy. Cant remember the real name.
When the coolant temp hits a certain * (you can get them to melt out at different temps) the center of that cap melts so whoever has a warranty on the engine knows its been overheated which voids the warranty. Probably the junk yard that sold it to you. Alot of machine shops use them.
/e 'heat tab'
When the coolant temp hits a certain * (you can get them to melt out at different temps) the center of that cap melts so whoever has a warranty on the engine knows its been overheated which voids the warranty. Probably the junk yard that sold it to you. Alot of machine shops use them.
/e 'heat tab'
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