THANKS W! Its a V2 filter! I will give it to my buddy that vhas a bruteforce!by part number, no idea. Can tell you that the Tcat has 20mm X 1mm pitch threads and the V2 has 20mm X 1.5mm pitch threads.
Pitch is the distance between the VVV's of the thread. 1mm pitch is a finer thread then 1.5mm