An electromagnetic body has a movable core reciprocatably movable within a movable core chamber. The movable core has through holes and a fitting hole that pass through the movable core in a direction of movement of the movable core. A stator core facing the movable core defines the movable core chamber together with the electromagnetic body. A valve stem is fixed into the fitting hole and has a fluid chamber recessed from a first end surface facing the stator core. Air bubbles generated in a gap can be guided into the fluid chamber and collapse by flow of the fuel flowing into the fluid chamber from the through holes through the gap.