Exemplary embodiments of the present invention are directed towards improved mounting structures and methods for formation of window regulator systems for vehicles. In one exemplary embodiment, a method of securing a pulley to a panel of a window regulator system is provided. The method comprising the steps of: inserting a shaft portion of a first pulley into a first slotted portion and a first cavity of a first mounting structure in a first direction; and deflecting a resilient engagement feature integrally formed with the first mounting structure that is located above the first slotted portion in the first direction when the shaft portion of the first pulley is inserted into the first slotted portion and the first cavity in the first direction, the first cavity and the first slotted portion each being configured for rotatably receiving a portion of the shaft portion of first pulley therein, the resilient engagement feature extending from the first mounting structure into the first cavity and the resilient engagement feature being configured to be deflected from a first position in the first direction when the shaft portion of the first pulley is inserted into the first cavity and the first slotted portion in the first direction and wherein the resilient engagement feature returns to the first position when the shaft portion is fully inserted into the first cavity and wherein the resilient engagement feature is configured to prevent the shaft portion of the first pulley from being removed from the first cavity when the shaft portion is fully inserted into the first cavity, wherein the resilient engagement feature of the mounting structure is the only item that prevents the shaft portion of the first pulley from being removed from the first cavity once the shaft portion of the first pulley is fully inserted into the first cavity and wherein the mounting structure is integrally formed with the panel of the window regulator system.