A power injector syringe assembly (110) is disclosed. The power injector syringe assembly (110) includes a power injector syringe (112) and coupling (130) that are permanently joined. The coupling (130) includes a wedge-shaped mounting flange (144) to facilitate installation of the assembly (110) on a syringe mount (200) of a power injector. The coupling (130) also includes at least one coupling member (150) to facilitate removal of the assembly (110) from the syringe mount (200).