Following Ferrari practice, their numeric designations refer to their engines' single-cylinder displacement expressed in cubic centimetres. The 365 GT4 2+2 was introduced in 1972 to replace the 365 GTC/4. It then evolved into the 400, the first Ferrari available with an automatic transmission. In 1979 the 400 was replaced by the fuel injected 400 i. The improved 412 ran from 1985 to 1989, bringing to an end Ferrari's longest-ever production series.