Metal piece fell off 2003 VW Jetta

Does anyone know what this piece is and if I have to replace it?
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Comments
No guesses yet eh? I'm no mechanic but I'd guess some sort of heat shield. Although, usually those are rusty looking and your part looks awfully shiny.
yeah that's a good guess---heat shield of some sort. If you took it to the VW parts counter they might know, or it might even have a number on it. Also a muffler shop might know.
Looks like off the catalytic converter. No, you don't need to replace it.
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