Replacement AEM Filter?

[CWgauge]

I'm going to replace my Spectre filter with a AEM. Is this the one I need?
http://shop.advanceautoparts.com/we...ir-Filter-AEM_22120558-P_N4027S_P|GRP2026____

 

[mhorn0817]

check ebay...i just got mine for $19 shipped,brand new aem, 2 week ago

 

[Max]

What size inlet? I have a 21-2099dk on my k&n system.