Looks like the OEM filter for the C5 RS6 (part number 078115561K) has been discontinued.

Some sources are listing part number 06A115561B as the OEM replacement, but this also shows for a 1.8l Jetta?

Is this the new filter PN we should be using for the 03 RS6? What are you guys using?

Has anyone done a side by side comparison of the two part numbers? It would be interesting to see if there is any difference in size or filter capacity/material.

Iíd like to stick to OEM but if I canít get OEM I will use a MANN filter.