I called K&N today to get the part number for a 1998 A4 2.8. The number is 33-2125, and retails for $58.16. Call K&N for a dealer ar 800-858-3333.<p>Paul <br>98.5 2.8 QMS catus Green

I got mine for $39 at Imparts (www.imparts.com), part number 530-540-73 (that's their internal part number, not the K&N number). And that is for my 1.8t, but I heard that the 12V, 30V and 20V all use the same size air filter.<p>Christian