I've been looking around for the "belly pan" for my 1999 a4 1.8t and can't seem to find it anywhere, no parts shop knows what I'm talking about. Its just the plastic guard under the front bumper to cover the engine bay from the bottom.
Anyone know where i can get one?

 

ECStuning carries them.

 

what happened to your old one? i may sound cheap but i repaired mine after it was half ripped off. its pretty red neck but it has all the aerodynamics as a new one. The best part is it was free also

 

you can get an oem one like auditech said, or there are some aftermarket ones out there, cant remember where tho sorry. I think theres someone on her that makes them and sells them, calls them panzer plates i think. If your asking a shop they are reffered to as inspection plates usually.
Or you could go this route:

 

Panzer Plate. Buy one. If you have to replace it anyway, might as well upgrade.

Another option