body to define an inner space at least one of the first plate filter body and the second plate filter body may include a curvature projecting to the interior space in a profile extending transversely to a longitudinal direction with respect to the longitudinal center axis application_number US 201414888705 A description according to fig1 to 5 a filter element 1 which is in particular an air filter element and preferably a vehicle air filter element comprises a first plate filter body 2 made of a pleated filter material and a second plate filter body 3 likewise made of a pleated filter material expediently the same filter material is concerned the second plate filter body 3 expediently runs parallel to the first plate filter body 2 and represents a separate component in this respect the two plate filter bodies 2 3 lie diametrically opposite one another in the filter element 1 with respect to a longitudinal centre axis 4 of the filter element 1 the respective plate filter body 2 3 is preferably designed as a flat plate filter body 2 3 in which a plate plane runs parallel to the folds of the folded filter material and in which the individual folds are arranged adjacent to one another in the plate plane the filter element 1 has in addition a first wall body 5 made of a plastic and a second wall body 6 likewise made of a plastic expediently the two wall bodies 5 6 are injection moulded from the same plastic the first wall body 5 is rigidly and tightly connected to a first transverse end 7 of the first plate filter.