A submersible pump motor housing assembly comprising: a two-part housing having a first housing part with a motor housing portion and a pump motor component housing portion separated by a housing wall with sealable ports formed therein, the motor housing portion configured with a motor housing chamber to receive and contain a motor to be arranged therein with oil to be filled to an oil fill line, the pump motor component housing portion configured with a pump motor component housing chamber configured to receive and contain at least one pump motor component to be arranged therein, the sealable ports configured to pass electrical connections to be coupled from the at least one pump motor component through the housing wall to be connected to the motor to be arranged in the motor housing chamber of the motor housing portion; and a second removable housing part configured to detach from the pump motor component housing portion in order to insert the at least one pump motor component (14, 16) into the pump motor component housing chamber without draining the oil from the motor housing portion, and to attach to the pump motor component housing portion in order to close the pump motor component housing chamber once the at least one pump motor component (14, 18) are inserted therein characterized in, that the submersible pump motor housing assembly comprises a capacitor cup configured to receive and contain the at least one pump motor component; and the pump motor component housing chamber is configured to receive the capacitor cup when the second removable housing part is detached from the pump motor component housing portion. a two-part housing having a first housing part with a motor housing portion and a pump motor component housing portion separated by a housing wall with sealable ports formed therein, the motor housing portion configured with a motor housing chamber to receive and contain a motor to be arranged therein with oil to be filled to an oil fill line, the pump motor component housing portion configured with a pump motor component housing chamber configured to receive and contain at least one pump motor component to be arranged therein, the sealable ports configured to pass electrical connections to be coupled from the at least one pump motor component through the housing wall to be connected to the motor to be arranged in the motor housing chamber of the motor housing portion; and a second removable housing part configured to detach from the pump motor component housing portion in order to insert the at least one pump motor component (14, 16) into the pump motor component housing chamber without draining the oil from the motor housing portion, and to attach to the pump motor component housing portion in order to close the pump motor component housing chamber once the at least one pump motor component (14, 18) are inserted therein characterized in, that the submersible pump motor housing assembly comprises a capacitor cup configured to receive and contain the at least one pump motor component; and the pump motor component housing chamber is configured to receive the capacitor cup when the second removable housing part is detached from the pump motor component housing portion.