A coupling arrangement has a fuel injector cup with a central longitudinal axis coupled to a fuel rail at a first axial end area and to a ring element at a second axial end area by a circlip. The cup has at least two slots arranged at the second end area and at least two grooves arranged at least partly circumferentially the cup and axially overlapping with the slots. The ring element is arranged at the central longitudinal axis facing the second end area and coupled to a housing. The ring element has at least two protrusions facing the cup having at least two grooves arranged at least partly circumferentially the ring element in a common plane with the grooves. The circlip is arranged at least partly circumferentially the cup at least partly in the grooves and arranged at least partly circumferentially the ring element at least partly in the grooves.