https://audi.7zap.com/en/rdw/audi+a2/a2/2003-248/1/129-129015/#14
This may be of use.
Looking like a 049 129 627 T
I don't think it does anything other than cool the exhaust manifold. I looked at ours and it simply draws air from the front bumper and onto the manifold. If it has a hole in it I would just leave it, or put some insulation tape tight around it.
Great find and help. Thanks.Thats a very useful parts website!