Auto Parts: passenger side mirror cover, 2002 nissan altima, nissan altima

Question
The passenger side mirror cover on my 2002 Nissan Altima has come off. The rest of the mirror is working just fine. Only the mirror cover is gone. Are these covers sold in after market or do I have to go to the dealer?

Answer
    A new one will have to come from the dealer.  You could also get a used one at a salvage yard, but they will probably want you to buy the whole mirror assembly.  Advantage to the salvage yard: they may be able to come up with one that is painted the right color already.