A known weak spot in the E30 M3's driveline. Replacing these inexpensive mounts will remove a lot of the play that occurs with worn mounts. This set of transmission mounts fit all 1987, 1988, 1988, 1989, 1990 and 1991 M3 (E30 chassis) and are sold by the pair. If you require just one, please give us a call.