what is the part # oil filter for our engines.,,

will part # 056 115 561G work with out going against the audi cpo b/s rules?

from a web-based parts supplier. If you search for part number using the audi number, the correct Mann filter will show up (it just won't have the Audi 4-rings logo on it, but the W930/21 is the identical filter that the factory puts on). Mahle also makes an OEM equivalent filter, but the Mann part number has recently changed (you can find the correct one on carmadillo.com under the 2001 S4 category).

The 561G may not have the same pressure relief rating as the 561J, but I am not familiar with the specs on the "G" filter you mention.

different number that has been quoted on these forums, but that was an older application for the Mahle. Now the OEM part number cross reference is printed right on the box of the OC 485.