A fuel pump comprising a motor arrangement and a pump arrangement, wherein the pump arrangement is driven by the motor arrangement to pressurize fuel, and the motor arrangement includes: a stator core that includes a plurality of teeth, which are arranged one after another in a circumferential direction; a plurality of coils that are wound around the plurality of teeth, wherein the plurality of coils switches magnetic poles, which are formed one after another along an inner peripheral surface of the stator core when energization of the plurality of coils is controlled; and a rotor that is rotatably arranged radially inward of the stator core and has magnetic poles of opposite polarities that are alternately arranged in a rotational direction of the rotor along an outer peripheral surface of the rotor, which is radially opposed to the stator core, wherein a fuel passage is formed between the outer peripheral surface of the rotor and the inner peripheral surface of the stator core to conduct the fuel, which is pressurized by the pump arrangement, the fuel pump being characterized by: dielectric resin that is filled between each circumferentially adjacent two of the plurality of teeth to cover the plurality of coils, wherein: the stator core includes a plurality of cores, which are arranged one after another in a circumferential direction, while each of the plurality of cores includes a corresponding one of the plurality of teeth; and the dielectric resin is molded to form a plurality of clearances, each of which is formed between the corresponding circumferentially adjacent two of the plurality of teeth, to conduct the fuel that is pressurized by the pump arrangement. a stator core that includes a plurality of teeth, which are arranged one after another in a circumferential direction; a plurality of coils that are wound around the plurality of teeth, wherein the plurality of coils switches magnetic poles, which are formed one after another along an inner peripheral surface of the stator core when energization of the plurality of coils is controlled; and a rotor that is rotatably arranged radially inward of the stator core and has magnetic poles of opposite polarities that are alternately arranged in a rotational direction of the rotor along an outer peripheral surface of the rotor, which is radially opposed to the stator core, wherein a fuel passage is formed between the outer peripheral surface of the rotor and the inner peripheral surface of the stator core to conduct the fuel, which is pressurized by the pump arrangement, the fuel pump being characterized by: dielectric resin that is filled between each circumferentially adjacent two of the plurality of teeth to cover the plurality of coils, wherein: the stator core includes a plurality of cores, which are arranged one after another in a circumferential direction, while each of the plurality of cores includes a corresponding one of the plurality of teeth; and the dielectric resin is molded to form a plurality of clearances, each of which is formed between the corresponding circumferentially adjacent two of the plurality of teeth, to conduct the fuel that is pressurized by the pump arrangement. the stator core includes a plurality of cores, which are arranged one after another in a circumferential direction, while each of the plurality of cores includes a corresponding one of the plurality of teeth; and the dielectric resin is molded to form a plurality of clearances, each of which is formed between the corresponding circumferentially adjacent two of the plurality of teeth, to conduct the fuel that is pressurized by the pump arrangement.