VEHICULAR REAR SLIDER WINDOW ASSEMBLY WITH RETAINING ELEMENT

A vehicular rear slider window assembly includes a fixed window panel having an inner side and an outer side, an upper rail and a lower rail attached at the inner side, and a movable window panel having a lower perimeter edge received in a channel of the lower rail and an upper perimeter edge received in a channel of the upper rail. The lower rail includes a first attaching surface that attaches at the inner side and a second attaching surface opposite the first attaching surface. A retaining element is attached along the lower rail and at the second attaching surface. The retaining element includes an attaching portion that attaches at the second attaching surface and a retaining portion that extends at least partially across the channel of the lower rail to limit vertical movement of the movable window panel relative to the upper and lower rails.