A solenoid valve includes a magnet assembly, a valve cartridge having a pole core, a valve sleeve connected to the pole core, an armature, and a valve body. The armature is guided in an axially movable manner within the valve sleeve and is coupled to a closing element. The magnet assembly generates a magnetic field via energizing a coil winding. The magnetic field moves the armature counter to a force of a spring. The valve body is positioned within the valve sleeve. A valve seat of the valve body forms a main valve with the closing element that sets a fluid flow between at least one first fluid opening and at least one second fluid opening. A positive connection between the valve sleeve and the valve body is formed to prevent movement of the valve body introduced into the valve sleeve counter to a direction of introduction.