Title: When does 1 item constitute an assembly?
Review: Part FC212, Oil Filler Cap Assembly on a GM parts website specifies this includes the cap and oil fill tube. Granted, there was no such detail to the description on Amazon. It simply said AC Delco FC212 Oil Filler Cap Assembly.So to answer my own question, 1 item becomes an assembly when you expect the same part number on two sites to mean the same thing!
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