The proposal is for a fuel supply device with a fuel tank (12) from which fuel is conveyed to an internal combustion engine. On the bottom (13) of and inside the fuel tank (12) there is a fuel supply system (14) which can be secured between an upper side (17) and the bottom (13) of the fuel tank (12) by means of a force-travel storage device (16) in the form of a spring element. A tank flange (21) bearing at least one electric and hydraulic connecting line (22, 23) can be fitted anywhere on the fuel tank (12) regardless of the arrangement of the fuel supply system (14).
