Replacing Air filter

[need2speed75]

Hey all, Newbie here..have a 03 evo with an AEM short ram intake. I need to replace the air filter (the same one pictured on the install thread), but can't find it anywhere. I checked on the aem site and all they have is the 2.75 in one, which I know the one i have is way larger, because of the adaptor. Anyone have any clue as in what part number or where may i find it?

[rice_burner]

It should be a cotton gause filter. Just take it out and wash it.

[yozsi]

and you can get the k&n wash kit at any auto parts store.

[4AGZE&4G63T]

yep, what they said.