A ventilating unit with moisture absorber consists of an essentially vertically oriented bushing (1), provided with shoulders for engaging in an opening made in the bottom part (4) of the headlight cover and a bottom with an outlet opening, while on the bottom of the bushing there is arranged a filtering mechanism (2) on which is fitted a ventilating insert (3) with moisture absorber, whose outer peripheral walls are in close contact with the inner peripheral wall of the bushing (1). Advantageously, a paper filter is the filtering mechanism (2), and magnesium chloride hexahydrate is the moisture absorber, while a sealing element (5) is placed between at least one shoulder of the bushing (1) and the bottom part (4) of the headlight cover.