This Dorman 749-744 Window Regulator is a perfect fit for your BMW 323Ci, 325Ci, 328Ci, 330Ci, M3. The window regulator is designed for the front left side of your vehicle and has interchange part numbers SK749744, WR0051, 51338229105, WPR4794L, 84872, 823005e, and WLR3060.