We may have a USA vs. Canada issue. While at my VW dealer today for the 50k mile service, I ordered the hose 000-012-499. The parts guy had not heard of the hose, but was able to look it up with the P/N I gave him ($21.00). It should be here tomorrow. I also bought a large jug of VW AdBlue (GUS-052-910-A3, 2.5 gal/9.46 l, $10.70). The jug has a white cap. The parts guy said the black cap jugs were no longer available (he could look it up and see it a picture of the black cap jug on their computer). So, when the hose comes in I'll see if it fits the white cap jugs. If not, and if the black cap jugs are really not available here, then I'll see if I can return the hose.The compatible jug has a black cap: G-052-910-A4 and is a 10L jug.
The 2.5 Gal / 9.46L white cap jug is not compatible with 000-012-499.
BTW - I also bought a new engine air filter (059-198-405). Only $10.95.