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Identification of Transmission
F13/F13+/F13 MTA/F17+/F17+ MTA, Variant 1
The transmission number is to be found on the end shield
| 1. |
Manufacturing plant (A = Aspern, B = Bochum) |
| 2. |
Day in year |
| 3. |
Last digit of year |
| 4. |
Work shift (1 = early shift, 2 = late shift) |
| 5. |
Transmission type (F13/F17+) |
| 6. |
Transmission type F13+ |
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M = F13+ (modified F13 transmission as of model
year 2007 onwards) |
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Z = F13+ MTA (modified F13 MTA transmission with
revised 3rd gear ratio, for model year 2007 only) |
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P = F13+ |
| 7. |
Transmission code |
| |
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W = Wide Ratio |
| |
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C = Close Ratio |
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E = Economy ratio |
| 8. |
Final drive ratio |
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F13/F13+/F13 MTA/F17+/F17+ MTA, Variant 2
The transmission number is to be found on the end shield
| 1. |
Day in year |
| 2. |
Last digit of year |
| 3. |
Work shift (1 = early shift, 2 = late shift) |
| 4. |
Transmission type F13+ |
| |
|
M = F13+ (modified F13 transmission as of model
year 2007 onwards) |
| |
|
Z = F13+ MTA (modified F13 MTA transmission with
revised 3rd gear ratio, for model year 2007 only) |
| |
|
P = F13+ |
| 5. |
Transmission code |
| |
|
W = Wide Ratio |
| |
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C = Close Ratio |
| |
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E = Economy ratio |
| 6. |
Final drive ratio |
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F13/F13+/F13 MTA/F17+/F17+ MTA, Variant 3
The transmission number is to be found on the end shield
| 1. |
Manufacturing plant (A = Aspern, B = Bochum) |
| 2. |
Last digit of year |
| 3. |
Serial number |
| 4. |
Alphacode |
| 5. |
Transmission code |
| |
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W = Wide Ratio |
| |
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C = Close Ratio |
| |
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E = Economy ratio |
| 6. |
Final drive ratio |
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F23
The transmission number is engraved into the transmission
housing.
|
| 1. |
Housing type |
| 2. |
Transmission code |
| 3. |
Last digit of year |
| 4. |
Serial number for this year |
| 5. |
GETRAG internal change index |
| 6. |
OPEL part number (not always present) |
| 7. |
OPEL Alpha code |
| 8. |
Bar-code label for production control in
manufacturing plants |
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M20/M20 MTA/M32
To model year 2007, the code for the M20/M32 transmission is
engraved on the front of the transmission housing, next to the
gearshift lever shaft.
As of model year 2007, the code for the M20/M20 MTA and M32
transmissions will be found on the back of the transmission
housing, above the axle shaft. In addition, an Alphacode sticker
will be placed on the cover of the differential.
| 1. |
Transmission type (M32) |
| 2. |
Design (O = Opel) |
| 3. |
Engine family (2) |
| 4. |
Output ratio i a
(3.941) |
| 5. |
Gear set (C) |
| 6. |
OPEL Alpha Code (MH) |
| 7. |
Serial number (7 digit) |
| 8. |
Last digit of year (4= 2004) |
| 9. |
2 blanks |
| 10. |
Manufacturing plant (A= Aspern) |
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