Filter

An air filter comprising:

• a hollow cylindrical filter housing having a first axial terminal area and a second axial terminal area and comprising a cylindrical outer filter housing wall, defining an interior of the filter housing, and a ring-shaped flow guiding wall, wherein the ring-shaped flow guiding wall extends coaxially to the cylindrical outer filter housing wall in the interior of the filter housing, and wherein a ring-shaped flow space is formed between the cylindrical outer filter housing wall and the flow guiding wall;
• a filter element disposed in the filter housing and comprising an annularly closed filter medium, wherein the flow guiding wall surrounds the filter element;
• an inlet socket arranged on the cylindrical outer filter housing wall in the first axial terminal area, wherein the inlet socket extends tangentially relative to the cylindrical outer filter housing wall;
• wherein the inlet socket has a projection which projects into a partial area of the ring-shaped flow space and bridges the ring-shaped flow space up to the flow guiding wall.