Have a pair of Mahle OC 51 (P/N 068 115 561B) oil filters purchased for a B5 Audi A4 probably a decade or so ago.
If I recall correctly these were meant for a 1.8T but may also fit other VW/Audi or even Porsche vehicles.
I have two of these new-in-box(ish, opened for photos).
Willing to deliver the pair near Rockville for $10 or arrange free pickup if you come to me. Willing to meet near Travilah Square or University of Maryland, Shady Grove campus.