Dorman 748-321 Window Regulator Assembly is a front-right replacement part for the 2006–2010 Hyundai Sonata, enabling the passenger-side window to move up and down. The part number 748-321 identifies the specific regulator assembly used on this model year range. This assembly replaces the original window regulator in the front-right door, providing the mechanism needed to actuate the window along its track.
