Fuel tank connector

The present invention relates to a fuel tank (B) with a connector (A), wherein the connector (A) is adapted to be fitted to an opening (Ba) of a fuel tank (B) to connect the fuel tank and a pipe (C) in communicating fashion, the connector (A) comprising: a gas barrier member (10) made of a synthetic resin having a gas barrier property, the gas barrier member (10) including a tubular portion (11) and a flanged portion (12) provided on a peripheral side of the tubular portion (11) and having a greater side than the opening (Ba) of the fuel tank (B); wherein the gas barrier member (10) is made of polyphenylene sulfide, a liquid crystal polymer or aromatic polyamide; the gas barrier member (10) has at least a portion of a surface covered with an outer shell (50) made of an olefin resin having an adhesive property, polyethylene or high-density polyethylene; and the outer shell (50) includes an annular projected portion (2a), which covers a leading end of the flanged portion (12) and projects toward an outer surface of the fuel tank (B).