The 1996-1998 BMW Z3 Rear Window Defroster Switch Coupe Hardtop with Trim Panel OEM is a genuine part designed specifically for BMW vehicles. This switch controls the rear window defroster function in the car, ensuring that the window can be easily cleared of frost or fog for optimal visibility. Made by the original manufacturer, this part is guaranteed to fit and function like the original equipment in the BMW Z3 models from 1996 to 1998.