Porsche 928 Transmission Codes
We have already gone into depth on Porsche 928 option codes and 968 parts catalogs, but our more technical readers asked us for detailed transmission codes so we decided to create this dedicated page. In the table below you can find all the information on the transmission codes and options for the 928, including model years and variants.
| Code | Transmission | Model | Model years |
|---|---|---|---|
| A22.01 | 3-speed automatic | 928 Euro | 1978, 1979, |
| A22.01 | 3-speed automatic | 928 all markets | 1980, 1981, 1982, |
| A22.02 | 3-speed automatic | 928 America Japan | 1978, 1979, |
| A22.04 | 3-speed automatic | 928 S Euro | 1980, 1981, 1982, 1983, |
| A28.01 | 4-speed automatic | 928 S America Japan | 1983, 1984, |
| A28.02 | 4-speed automatic | 928 S Euro | 1984, |
| A28.03 | 4-speed automatic | 928 S Euro | 1984, |
| A28.04 | 4-speed automatic | 928 S Euro CAT, America, Japan | 1985, |
| A28.05 | 4-speed automatic | 928 S Euro (14:33) | 1985, |
| A28.06 | 4-speed automatic | 928 S Euro (13:33 shorter gear ratio M251) | 1985, |
| A28.07 | 4-speed automatic | 928 S America Japan | 1986, |
| A28.08 | 4-speed automatic | 928 S Euro (14:33) | 1986, |
| A28.09 | 4-speed automatic | 928 S Sweden Switzerland Australia (13:33 shorter gear ratio M251) | 1986, |
| A28.11 | 4-speed automatic | 928 S Euro CAT | 1986, 1987, |
| A28.12 | 4-speed automatic | 928 S4 America Japan | 1987, 1988, |
| A28.14 | 4-speed automatic | 928 S4 Euro | 1987, 1988, |
| A28.16 | 4-speed automatic | 928 S4 all markets | 1989, 1990, 1991, |
| A28.18 | 4-speed automatic | 928 GTS | 1992, 1993, 1994, 1995, |
| G28.03 | 5-speed manual | 928 all markets | 1978, 1979, 1980, |
| G28.05 | 5-speed manual | 928, 928 S | 1980, 1981, |
| G28.05 | 5-speed manual | 928 S | 1982, |
| G28.07 | 5-speed manual | 928 S Euro | 1983, 1984, |
| G28.08 | 5-speed manual | 928 S America | 1983, 1984, |
| G28.09 | 5-speed manual | 928 all markets | 1982, |
| G28.10 | 5-speed manual | 928 S Euro | 1985, 1986, |
| G28.10 | 5-speed manual | 928 S Euro CAT | 1986, |
| G28.11 | 5-speed manual | 928 S America, Euro CAT | 1985, |
| G28.11 | 5-speed manual | 928 S America | 1986, |
| G28.12 | 5-speed manual | 928 S4 Euro | 1987, 1988, |
| G28.12 | 5-speed manual | 928 S4 all markets | 1989, |
| G28.13 | 5-speed manual | 928 S4 America | 1987, 1988, |
| G28.55 | 5-speed manual | 928 S4 M637 Club Sport | 1988, 1989, |
| G28.55 | 5-speed manual | 928 GT | 1989, 1990, 1991, |
| G28.57 | 5-speed manual | 928 GTS | 1992, 1993, 1994, 1995, |
