Abstract: A filter system and a filter element of the filter system having a recess arranged on an outside of the filter element and at least one coding element arranged on a circumference of an end cap of the filter element. At least one coding pin is arranged on an inside of a bottom housing part for cooperating with the recess when the filter element is inserted in the housing. The bottom housing part includes a circular shield having a slot extending in the axial direction, wherein the slot is configured to receive the coding element of the filter element when the filter element is inserted in the housing.

Abstract: At least two juxtaposed brake rings forming a brake disc for disc brakes are carried by a cup-shaped hub and connected with one another by the hub. Each of the two members have the same basic form and are fitted into one another. Each of the members integrally forms a brake ring and hub members which are connected with one another by a fastening device for securing the multi-part brake disc to a carrier.