An object is to enhance the assembly of a breather pipe which is accommodated in a filler pipe.
A nozzle guide (10, 10a, 10b) that is arranged within a filler pipe (110) includes: a main body portion (20, 20b) that guides the insertion and removal of a refueling nozzle (150); and a connection member (50, 50a to 50c) that is provided on an outer circumferential surface (27) of the main body portion (20, 20b) and in which an upper end portion (51) of the connection member is located, in a tank direction (TD) extending from a refueling port (FC) toward a fuel tank (FT), on a downstream side with respect to a tip end portion (152) of the refueling nozzle (150), and the connection member (50, 50a to 50c) includes: a connection portion (52, 52a) connected to a breather pipe (120) that is arranged within the filler pipe (110); and a vapor flow path formation portion (55, 55b, 55c) that forms part of a vapor flow path (220) for the fuel vapor that flows in through the breather pipe (120) and the connection portion (52, 52a).