Patent ID: 8864865

Claim:
An filter air filter element ( 10 ) comprising: a cylindrical central tube ( 11 ); an end disk ( 16 ) formed monolithically in one-piece as a unitary component with the cylindrical central tube ( 11 ) and closing off a first axial end of the cylindrical central tube ( 11 ) and covering an axial end face of the filter element; a filter material ( 12 ) arranged on and covering a cylindrical outer surface of the cylindrical central tube ( 11 ); a torque transmission device ( 18 ) formed on the end disk ( 16 ) of the central tube ( 11 ), the torque transmission device operable to transmit torque from a tool to the air filter element ( 10 ); a fastening device ( 14 ) formed on or secured onto an opposing second axial end of the central tube ( 11 ), the fastening device ( 14 ) operable to detachably secure the filter element ( 10 ) into an interior of a filter housing cylindrical support body ( 21 ) formed in an interior of the filter housing, the cylindrical support body ( 21 ) cylindrically surrounding a radial exterior of the air filter element, the detachable securing accomplished by an insertion/rotation movement of the fastening device relative to the support body.