| Change speed (Type BC) |
| Part Number | Description | |
| 43 WQ/3 | Housing for change speed lever sperical bearing - bottom | |
| 44 WQ/2 | Sperical bearing for change speed lever | |
| 45 WQ/1 | Housing for change speed lever sperical bearing - top | |
| 344 WQ/1 | Selector shaft for change speed - (Gardner engine) | |
| 336 WQ/3 | Change speed lever | |
| 531 WQ/1 | Selector shaft for change speed - (AVW engine) |