| pg1 gear ratio chart | ||||||||
| Gearbox model number | original application | 1st | 2nd | 3rd | 4th | 5th | Final Drive | |
| Late models | ||||||||
| B4BP | Lotus | 3.25 | 1.894 | 1.307 | 1.033 | 0.848 | 3.937 | |
| C4BM | MG45 entry 1.8 | 3.166 | 1.842 | 1.307 | 1.033 | 0.765 | 4.2 | |
| C6BKUH | MG45 Core KV6 | 3.166 | 1.842 | 1.307 | 1.033 | 0.765 | 3.937 | |
| G4BSV | MG25 VVC | 3.25 | 1.894 | 1.307 | 1.033 | 0.848 | 4.2 | |
| S6BS | R25 Diesel | 3.25 | 1.894 | 1.222 | 0.848 | 0.648 | 3.937 | |
| S4EM | Freelander 1.8 | 3.25 | 1.894 | 1.222 | 0.848 | 0.648 | 4.2 | |
| M4BSQ | MG ZR motorsport | 2.293 | 1.894 | 1.5 | 1.269 | 1.034 | 4.2 | |
| Earlier Models | ||||||||
| C6BP | Elise / MGF | 3.25 | 1.894 | 1.307 | 1.033 | 0.848 | 3.937 | |
| C4BP | Elise / MGF (VVC) | 3.25 | 1.894 | 1.307 | 1.033 | 0.848 | 3.937 | |
| S4EM | Freelander 1.8 | 3.25 | 1.894 | 1.222 | 0.848 | 0.648 | 4.2 | |
| S7EMU | Freelander T/D | 3.25 | 1.894 | 1.222 | 0.848 | 0.648 | 3.647 | |
| S6BNU | Rover 45 T/D | 3.25 | 1.894 | 1.222 | 0.848 | 0.648 | 3.937 | |
| C6BM | Rover 45 1.8 | 3.166 | 1.842 | 1.307 | 1.033 | 0.766 | 3.937 | |
| S6BSU* | Rover 25 T/D | 3.25 | 1.894 | 1.222 | 0.848 | 0.648 | 3.937 | |
| C6BS | Rover 25 1.8 | 3.166 | 1.842 | 1.307 | 1.033 | 0.766 | 3.937 | |
| C4BS | Rover 25 VVC | 3.166 | 1.842 | 1.307 | 1.033 | 0.766 | 4.2 | |
| B6BS* | Rover 25 VVC | 2.293 | 1.75 | 1.307 | 1.033 | 0.848 | 3.937 | |
| S4DTU | Honda Accord T/D | 3.25 | 1.895 | 1.222 | 0.848 | 0.649 | 3.937 | |
| * - Unable to read identifier off photocopied fax! | ||||||||