Venturi for M3 from 04/1989 up to 07/1989 fits only for special edition 89, you need 1 for 1 car and for M3 from 09/1989 up, you need 1 for 1 car and for M3 from 12/1989 up to 02/1990 fits only for M Sport E3 (from M3 LHD AC79000 up to M3 LHD AC79599), you need 1 for 1 car

BMW Sedan 320i, 323i, M3 (E30)