Method for producing an air guiding device for a steering arm and steering arm with an air guiding device

Suspension control arm (2) with an air guide device (1), wherein the suspension control arm (2) has a cross-sectional profile that is open downward in the installed position, with a base surface (7) and at least two lateral webs (8) projecting from the base surface (7), and wherein the air guide device (1) comprises a stiffening element (3) for arrangement on the lateral webs (8) and an air guide element (4) made of plastic, as well as a method for manufacturing an air guide device (1) for a suspension control arm (2).