An integral fuel line for use in a fuel injection type of fuel distribution system for motor vehicles includes an innermost tube defining a high pressure line, an intermediate tube defining a low pressure line, and an outer tube defining a vapor recovery line. The innermost tube has a first passage for delivering fuel from a storage tank to an engine cylinder of a motor vehicle. The intermediate tube is spaced from and surrounds the innermost tube to form a second passage therebetween for returning the unused portion of fuel back to the storage tank. The outer tube is spaced from and surrounds the inatermediate tube to form a third passage therebetween for returning vaporized and evaporated fuel back to the storage tank.