Accepts either 1-1/4in. or 1-3/8in. water fill hose Has a tank vent connection. Direct OEM replacement UV and impact resistant. Resistant to road salts and acids. Paintable Cutout Dim: 3-1/2in. dia. Outside Dim: 4-3/4in. dia. Dish Depth: 3/4in. Spout Depth: 2-1/2in.