Devices and methods for filling fuel tanks are disclosed. Some embodiments include components that reduce the level of turbulence in a fuel stream thereby increasing its flow rate. In some embodiments such anti-turbulence components can include one or more parallel flow vanes for directing the flow of fuel through a fuel filler pipe in a manner that reduces turbulence. Other embodiments may include a vane attached to a bracket in a mouth of the fuel filler pipe for directing the flow of fuel through a bend in the pipe.