e46 stock airbox question
noticed today that there is a tiny hole (pencil tip sized) in the very bottom of the airbox. i'm assuming this is normal but can someone confirm this for me?
Without walking outside to look... it's likely a drain :)
Mine has a hole in the back that's spring loaded and opens if you push in on it. It's the size of a quarter. Anyone know what that is?
OP that's a drain.
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