In a vehicle door with a cross-arm type window lift and a lock assembly, which can be produced more easily and cost-effectively by employing modular construction and by using individual components for several different functions. The invention is distinguished by the guide rail of the cross-arm window lift simultaneously functioning as the support for the lock assembly, by the guide for guiding the window being integrated in the base body of the lock assembly and by the outer edge of a base plate supporting a window lift having a circumferential profiled sealing section in the interior sheet metal door panel for sealing a mounting opening, so that the protection of electrical/electronic components is provided in the dry space without additional steps.
