[Kimo]

Originally Posted by jdoublehcubed

The Mann catalog lists filter HU 926/4 X for Z4M. Thats this one
http://www.amazon.com/Mann-Filter-HU...rds=hu+926+4+x

Not the one linked above.

Mann catalog
http://mcatalog.mann-filter.com/NA/e...ml:type=T94417

Right.
Different oil filter for the M - Mann HU926/4X.
Mann HU816X is correct for the non-M.

But as this thread was primarily directed at the cabin air filter, it might be worth restating that the Mann CUK2339 is the correct filter for that job - for both the M and non-M flavors of these cars.