model IV air filter

Does anybody know the partnumber for the K&N filter used on the model IV 912 with carb heat setup?
The Kitfox parts catalog does not list it and the K&N website seems to be offline.

I would like to replace mine because it seems to restrict airflow quite a bit. Cleaning and recharging didn't help unfortunately.

Thanks, Jan

Hi Jabkwab, My build manual lists it as a Filter, Air K&N R-1380
I have that same set-up, 912UL with carb heat air box

Fourth line up from the bottom..

Received it today, R-1380 is the right one.

Thanks!