A cylindrical filter element (210; 310) comprising: a central longitudinal axis (224; 324) extending along a height of the filter element (210; 310); a core element (212; 312) extending along at least a portion of the height of the filter element (210; 310), the core element comprising a convex curved central portion (216; 316) extending from a first end to a second end (220, 222; 320, 322) to define a width of the core element (212; 312), wherein the convex curved central portion (216; 316) comprises a maximum height through the central longitudinal axis (224; 324) that is larger than a height of at least one of the first and second ends; and filter material (214; 314) comprising a plurality of pleats extending radially from an outer periphery of the core element (212; 312), wherein an outer cylindrical periphery of the filter material (214; 314)is defined by an outer pleat tip of each of the plurality of radially extending pleats, and wherein an inner pleat tip of each of the radially extending pleats is adjacent to the core element (212; 312), wherein: - in a first alternative, the core element has wing portions (230, 232) extending from the first and second end (220, 222); or - in a second alternative, the core element has two extending portions (330, 332) extending from each of the first and second end (320, 322), characterized in that: - in the first alternative, the wing portions (230, 232) have a width greater than the width of the central portion; - in the second alternative, the extending portions (330, 332) have a length such that their tips extend beyond the outer width of the central portion and the width of the first and second end portions (320, 322). a central longitudinal axis (224; 324) extending along a height of the filter element (210; 310); a core element (212; 312) extending along at least a portion of the height of the filter element (210; 310), the core element comprising a convex curved central portion (216; 316) extending from a first end to a second end (220, 222; 320, 322) to define a width of the core element (212; 312), wherein the convex curved central portion (216; 316) comprises a maximum height through the central longitudinal axis (224; 324) that is larger than a height of at least one of the first and second ends; and filter material (214; 314) comprising a plurality of pleats extending radially from an outer periphery of the core element (212; 312), wherein an outer cylindrical periphery of the filter material (214; 314)is defined by an outer pleat tip of each of the plurality of radially extending pleats, and wherein an inner pleat tip of each of the radially extending pleats is adjacent to the core element (212; 312), - in a first alternative, the core element has wing portions (230, 232) extending from the first and second end (220, 222); or - in a second alternative, the core element has two extending portions (330, 332) extending from each of the first and second end (320, 322), - in the first alternative, the wing portions (230, 232) have a width greater than the width of the central portion; - in the second alternative, the extending portions (330, 332) have a length such that their tips extend beyond the outer width of the central portion and the width of the first and second end portions (320, 322).