A fuel atomizer for use in an internal combustion engine is mounted on a bracket and suspended within the air intake passageway of an engine, between the carburetor and the intake manifold, to facilitate the thorough mixing of fuel and air before combustion. When air moves through the passageway, it causes the atomizer to spin, which breaks up fuel droplets and promotes efficient combustion. The atomizer has a cylindrical cage with blades disposed about and parallel to its axis of rotation and with two circular end pieces which abut the blades to form the ends of the cage. The cage is horizontally mounted on an axis of rotation by the bracket which suspends the atomizer in the air passageway.