An air filter element and air filter system are provided. The filter element has an annular gasket that has multiple portions. A first portion provides axial sealing while a second portion provides only radially sealing. The filter element includes a frame with a radial abutment for engagement with a tooth on a filter housing for providing lateral biasing to the portion of the gasket that provides radial sealing.

An air filter element and air filter system are provided. The filter element has an annular gasket that has multiple portions. A first portion provides axial sealing while a second portion provides only radially sealing. The filter element includes a frame with a radial abutment for engagement with a tooth on a filter housing for providing lateral biasing to the portion of the gasket that provides radial scaling.

A central part of a columnar body in an axis direction parallel to inlet-side flow passages 70H.sub.in and outlet-side flow passages 70H.sub.out includes a first region R.sub.1 where the number of outlet-side flow passages 70H.sub.out adjacent to each inlet-side flow passage 70H.sub.in is N.sub.io1 (N.sub.io1 is any natural number) and a second region R.sub.2 where the number of outlet-side flow passages 70H.sub.out adjacent to each inlet-side flow passage 70H.sub.in is N.sub.io2 (N.sub.io2 is any natural number) and N.sub.io2 N.sub.io1 is satisfied. The outlet-side flow passage 70H.sub.out is not adjacent to another outlet-side flow passage 70H.sub.out, at the first region R.sub.1 and the second region R.sub.2 in the central part of the columnar body in the axis direction.