I have the gas tank from my 83 GTI ITB car cut open, and need to replace the diaphram on the bottom of the surge box. It is the round black thing in the center of this picture:


It has the VW logo, Audi rings, and a part number:

171 201 740

I went to my local VW dealer, and the part number did not show up in the computer, and the inside of the tank wasn't in his catalog. Any idea where I could get a replacement?

Thanks,

Tom