How do you find the differential ratio?
Posted: Sat Mar 07, 2020 8:57 pm
BMW differential ratio identification (take off differential cover and you will see stamped code on a ring gear):
| typ 168mm | Small case |
| H41 | 3.45 |
| H9 | 3.64 |
| H1 | 4.10 |
| H8 | 4.27 |
| H12 | 4.44 |
| typ 188mm | Medium case |
| H25 | 2.56 |
| H38 | 2.65 |
| H27 | 2.79 |
| H33 | 2.93 |
| H23 | 3.15 |
| H36 | 3.23 |
| H34 | 3.25 |
| H39 | 3.38 |
| H30 | 3.46 |
| H24 | 3.64 |
| H35 | 3.73 |
| H22 | 3.91 |
| H21 | 4.10 |
| H28 | 4.27 |
| H31 | 4.45 |
| typ 210mm | Large case |
| H69 | 2.81 |
| H53 | 2.93 |
| H56 | 3.07 |
| H57 | 3.15 |
| H64 | 3.23 |
| H60 | 3.46 |
| XMG362 | 3.62 |
| H54 | 3.64 |
| H52 | 3.91 |
| G58 | 4.10 |