I was accidentally sent a 6.7 filter and although they look almost identical, the 6.7 filter would not fit all the way in and was too tight. Make sure you don't have the wrong P/N or it will not fit correctly.
Yep, I got the 4" filter and crushed part of it making it fit, come to find out , they gave me one for the 6.7, the 4" for 5.9 fits perfect