Filter element with pre-separator and filter system

A filter system for filtering a fluid comprising:

• a filter housing;
• a filter element comprising:
• at least one filter bellows comprising
• a specified raw side and
• a specified clean side oppositely positioned relative to the specified raw side,
• wherein the at least one filter bellows comprises a filter medium,
• wherein the filter medium is folded along fold edges in a zigzag shape to folds,
• wherein the folds extend between oppositely positioned end edges of the at least one filter bellows, and
• wherein the at least one filter bellows comprises parallel extending end edge faces at oppositely positioned end faces;
• at least one pre-separator embodied as a flat mat and arranged at the raw side of the at least one filter bellows;
• a frame that is injection-molded from plastic material around the at least one filter bellows and seals the end edge faces,
• wherein at side faces of the frame, the frame forms hook fasteners on a raw side edge of the side faces, the hook fasteners formed in one piece together the frame and of the same material as the frame, the hook fasteners formed directly on the raw side edge of the side faces and projecting outwardly from the side faces;
• wherein the end edges of the at least one filter bellows are embedded into the frame, embedded into material of the frame, the embedded frame material sealing the end edges of the at least one filter bellows;
• wherein the hook fasteners of the frame engage into material of the flat mat of the pre-separator, fastening the pre-separator onto frame on the raw side of the at least one filter bellows
• wherein the filter element is exchangeably arranged in the filter housing,
• wherein the at least one filter bellows and the at least one pre-separator are configured to be exchanged together.