• Label
    Part Name
    Part No.
  • 4
    Layshaft, (Hi spec alternative) was 22A1371
    C-22A1731
  • 6
    Layshaft bearings
    88G396
  • 12
    1st motion ball bearing
    2A3709
  • 14
    3rd motion shaft (mainshaft)
    22G70
  • 15
    2A3712
  • 15
    Mainshaft double ball bearing
    AAU1365
  • 16
    Spring ring for double ball bearing was 22G721
    ADU4992
  • 18
    Synchronizer ball
    BLS107
  • 19
    Synchronizer spring
    22A367
  • 23
    3rd gear (23 teeth) 850cc
    22A583
  • 27
    Locktab
    DAM4000
  • 28
    Nut for 1st motion shaft
    2A3548
  • 29
    Idler gear, shaft size .750” (19mm)
    22G943
  • 30
    Idler gear thrust washer .130”-131” (3.30-3.32mm)
    22A1545
  • 30
    Idler gear thrust washer .132”-133” (3.35-3.37mm)
    22A1546
  • 30
    Idler gear thrust washer .134”-135” (3.40-3.42mm)
    22A1547
  • 30
    Idler gear thrust washer .136”-137” (3.45-3.47mm)
    22A1548
  • 30
    Idler gear thrust washer .138”-139” (3.50-3.53mm)
    22A1549
  • 31
    Final drive pinion
    22A399
  • 32
    Locktab
    DAM6140
  • 33
    Mainshaft nut
    22G48
  • 34
    Locktab
    DAM2377

Most of the gears are no longer available, part numbers for reference only.
Diff Ratio Mini Mini Pinion No.1 Mini Spindle No.8
Teeth Colour Part No. Teeth Colour Part No.
2-76 1275CC MPI (Special pairing 15x7) 15 Black TXD10004 7 Yellow TXF10001
2-95 998cc - Mini City E - Engine no. 99H 997P 17 Plain 22A1881 7 Blue DAM6028
3-1 12”wheel - 998cc high comp. Ratio & 1275cc 1990-96 except Cooper SPI 17 Plain 22A1881 7 Blue DAM6028
3-1 Cooper SPI only (special pairing 18x7) 18 Grey TXD10006 7 Red TXF10004
3-2 ERA turbo Mini 16 Yellow DAM8074 5 Red 22G2022
3-4 & 3-76 All Mini pre 1984, 1275GT with 10” & 12”wheels and 3.65 ratio 17 Plain 22A1881 6   2A3720
3-4 12”wheel, 998cc - 1984on, low comp. Plus F16 high compression engine 16 Green DAM2905 6   2A3720


Metro Metro Pinion No.1 Metro Spindle No.8 DIFF RATIO Notes
Teeth Colour Part No. Teeth Part No.
Pre 1984 18 teeth Red 22G2024 5 teeth 22G2022 3-64 998cc except economy
17 teeth Green DAM2904 5 teeth 22G2022 3-44 998cc HLE / 1275cc
18 teeth Blue DAM6365 6 teeth 2A3720 3-1 998cc / 1275cc economy
1984 to 1988-99H/A,B,C Eng No 18 teeth Red 22G2024 5 teeth 22G2022 3-64  
18 teeth Blue DAM6365 6 teeth 2A3720 3-1 Economy
99H/D,E engine numbers 1988 on 18 teeth Red DAM8079 5 teeth 22G2022 3-64  
18 teeth Blue DAM8075 6 teeth 2A3720 3-1  
12H/A,B,C engine numbers - 1984 to 1988 17 teeth Green DAM2904 5 teeth 22G2022 3-44 MG and standard
17 teeth Plain 22A1881 6 teeth 2A3720 2-95 Economy
16 teeth Green DAM2905 5 teeth 22G2022 3.2 MG Turbo
12H/D engine numbers 1988 on 17 teeth Green DAM8073 5 teeth 22G2022 3-44 MG/Sport/GTA - 13” wheels
17 teeth Plain DAM8078 6 teeth 2A3720 2-95 Economy
16 teeth Yellow DAM8074 5 teeth 22G2022 3-2 MG Turbo - 13” wheels