A fueling device comprises a resin passage-forming member configured to form a fuel path, a fuel path end member and a covering member. A resin sealing member constituting the fuel path end member is located on a filler port side of the fuel path and is welded to the passage-forming member about an axis of the fuel path to provide a seal against the passage-forming member by welding about the axis. The covering member is arranged to cover a welded part about the axis at which the sealing member is welded to the passage-forming member from outside of the fuel path with leaving a gap about the axis, which is formed between the welded part and the covering member and is divided into a plurality of sections. The covering member is protruded from an outer peripheral wall of the passage-forming member and is supported by the outer peripheral wall such as to form the gap. The covering member is linked with the outer peripheral wall of the passage-forming member by linkage sections formed between adjacent sections of the gap divided into the plurality of sections. This configuration suppresses deformation of a welded part between a pipe main body and an inner member by an external force.