A fluid injection valve (1) with a valve needle (20) and an electromagnetic actuator assembly (30) comprising a pole piece (34) and an armature (36) is disclosed. The valve needle (20) comprises a retainer element (24) for limiting axial displacement of the armature (36) with respect to the valve needle (20) in a first axial direction (D1). The pole piece (34) has a central opening (340) with a step (346) so that it has a first section (342) in which a first portion (242) of the retainer element (24) is arranged and a second section (344) for receiving a second portion (244) of the retainer element (24). The first section (342) of the central opening (340) has a smaller cross- sectional area than the second section (344).
