Front silencer for 728+730+733i all years of manufacturing, you need 1 for 1 car and for 728i all years of manufacturing only for country version AUS, S, you need 1 for 1 car and for 733i up to 09/1979 only for country version AUS, S (Modell80), you need 1 for 1 car

BMW 728 - 745i (E23)