| Model Code | Description | |
|---|---|---|
| 01 | 421.122, 421.123 | CODE 711 / B81 LESS TAILER BRAKE |
| 02 | 421.122, 421.123 | CODE 727 / B82 WITH TAILER BRAKE |
| 03 | 421.124, 421.125, 421.162, 421.163 | CODE 711 / B81 LESS TAILER BRAKE |
| 04 | 421.124, 421.125 | CODE 727 / B82 WITH TAILER BRAKE |