I am adding vented lowers to my X and I have the SEHeavy Breather. After looking up the parts list for the compact breather and the regular size, the only difference I see is the filter size. I have searched the forum and confirmed that. I need to replace the filter with the compact filter.

Anyone have the part number so I can order it direct from K&N?

 

K&N does not list a specific replacement for it; however if you can get me the measurements, I can match it by size for you.