A4_1.8T_1999_5ECT

It's right on the part in your picture. I can almost make it out from here..

A4orce84

How do I go about fixing/replacing the funnel exactly?

A4_1.8T_1999_5ECT

what's left inside the tube. Press on the new one until it clicks.

goldringer

I seen that also and believe it's Audi2ptzero's.

kookie

off the remains of the plastic. I used pliers, screwdriver and a ice pick. It is a little tricky but just be patient, and be very careful that none of the plastic bits fall into your oil funnel. A trick I used was I stuck my right arm from the side to get at the part (there is just enough space between the hoses) it is easier than trying both hands from the top, just remember to put on a jacket so your arms are covered with sleeves. Post if your still having problems.