a fuel pump assembly has a pump mounted to an electric motor by a spring clamp device preferably having a plurality of arms spaced circumferentially around the pump and extending axially generally parallel to an axis of rotation of the motor , from a common base member . the base member is preferably received by the motor , and each arm preferably has a clip which projects radially inward to contact an outboard end face of the pump . the clips are preferably disengageable from the pump and exert a controlled force on the pump , thus producing a consistent and controlled clamping force across the housing encasement to eliminate any potential distortion of the preferably plastic housing .