Patent ID: 6918504

Claim:
A fuel supply apparatus, comprising: an inlet box dented in a vehicle panel, and having a bottom wall, a neck-penetrating opening pierced through the bottom wall, a box-side axial engagement portion and a box-side radial engagement portion; and a filler neck disposed to penetrate through the neck-penetrating opening into the inlet box, and having an outer peripheral surface provided with a flange, the flange having a flange-side axial engagement portion engaging with the box-side axial engagement portion to regulate axial movements of the filler neck and a flange-side radial engagement portion engaging with the box-side radial engagement portion to regulate radial movements of the filler neck; the flange-side axial engagement portion being an engagement groove dented radially at a periphery of the flange, the box-side axial engagement portion being an engagement tab fitted into the engagement groove and held therein, and the box-side axial engagement portion engaging with the box-side axial flange-side axial engagement portion when the flange-side axial engagement portion is slid toward the box-side axial engagement portion in the radial direction.