Air filter device and filter element for an air filter device of a motor vehicle

An air filter device for a motor vehicle, comprising:

• a housing and a filter element, wherein the housing comprises a receiving space for the filter element, wherein the filter element has a frame which surrounds a filter material of the filter element at least partially, wherein the frame has a first side wall and an opposite second side wall, and wherein the frame has a first transverse wall and an opposite second transverse wall which connect the first and second side walls together;
• wherein a respective first projection projects from each side wall near one of the two transverse walls;
• wherein the housing has two opposite housing side walls, both of which have at least one link each in which the first projection of the respective side wall of the filter element is insertable in a first link end region directed in a first direction;
• wherein a respective second projection projects from the side walls near the other one of the two transverse walls, and the housing side walls each have a second link end region directed opposite to the first direction, into which the second projections are insertable such that the filter element is located in an operating position in the receiving space of the housing;
• wherein the side walls are elastically deformable such that a distance between the two projections arranged on the same side wall can be reduced to bring the second projections, during insertion, onto inwards directed link guide flanks in the second link end region assigned to them.