I don’t think this part even has a VW part number – ETKA claims that it’s part of 251201166, the breather line. Anyway, it plugs into a grommet on the tank and if it’s in two pieces like this one, you get fuel leaking out when the tank is more than about 3/4 full.
Oh, and superglue is not an answer.
This hose repair kit, however, is.
Close enough for me. I used smaller pipe clamps than the ones in the kit. And for the record I’m getting pretty good at R&R-ing the tank.