Filter system with a supporting tube

The invention relates to a filter system (100) that comprises a housing (108) with a housing wall (112) and at least one cover (110), an inlet connection (102) arranged on the housing (108) for supplying a fluid to be filtered, in particular air, an outlet connection (104) arranged on the housing (108) for discharging the filtered fluid, and a support tube (12) arranged in the interior (10) of the housing (108) for receiving a filter element. The support tube (12) extends along a housing axis (L) and is connected to the housing (108) via a snap connection (14) at a receiving side (16).