how many fuel pumps does my mercedes have? on 2004 Mercedes-Benz E320

i was told there were two but everytime i look up the part i only find one part for the right assembly

Asked by for the 2004 Mercedes-Benz E320
2 pick ups and one pump tank is over drive shift so it splits on each side . one piik up pullf fuel over to primray pump then up to engine they are under beck seat