I'm not really sure what it's called but it's the plastic tray that attaches under the radiator. Front air dam? Well, whatever it is, it was sagging when I bought the car. The fasteners finally let go and it was dragging on the road as I'd drive and every bump I hit tore a chunk off of it till it finally just all came off this morning.

What's it called and where/how much can I get one?

 

Front under diffuser. Talk to the guys over at Mazmart

 

Awesome. Found it. Is there any problem driving without it for a little while?

 

stones/ debris could get up there and damage your radiator or other engine parts, if traveling at highway speeds (Any speed, really). But, I've seen people drive without one, and they seem to be fine

 

Mazmart calls it the "engine under cover."

 

i think you mean under tray.

you dont need it per say, but it does protect the radiator. but i think if something were to hit the radiator, i think the AC condenser would get hit first, since it's mounted right in front of the radiator.