A jet pump is provided. The jet pump includes a body defining a fuel passage therein. The body includes an inlet and at least one exit orifice. The at least one exit orifice is downstream from the inlet in a direction of fuel flow from the inlet to the at least one exit orifice. A flow path is defined through the fuel passage from the inlet to the at least one exit orifice. A flow restrictor is disposed in the fuel passage between the inlet and the at least one exit orifice. The flow restrictor reduces dynamic pressure within the fuel passage and allows for increasing a cross-sectional area of the at least one exit orifice. A jet pump assembly including the jet pump and at least one fuel reservoir refill passage is also provided. A fuel system including the jet pump assembly and a fuel pump is further provided.