A magnet group (2) serves in particular for a magnet actuator (3) of a fuel injection valve (1). The magnet group (2) has a housing part (20) into which a coil (30) is placed. In addition, an armature (36) is arranged on a first side (31) of the coil (30). Furthermore, a cover (21), which closes off the housing part (20), is arranged on a second side (34), facing away from the first side (31), ofthe coil (30), wherein the cover (21) is connected to the housing part (20) by a weld seam (22). The multi-part design permits, in particular, adaptation of an interface (28) to a connector (24) which is connected to the housing part (20) or embodied in one piece therewith.