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10-27-2014, 09:39 AM | #1 |
Private First Class
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Z4M and 3.0si transmission differences
I am trying to understand what exactly are the differences between the z4m and 3.0si transmissions. My second gear synchro is getting tired, and I have found a very low mileage transmission from a 3.0si. Will this work in a z4m?
From another thread: The Z4M uses the GS6-37BZ-TJEE (BMW part number 23007837983) The 3.0si Z4 uses the GS6-37BZ-TJES (BMW part number 23007565178) Does anyone know the significance or the last 4 characters? |
10-28-2014, 11:46 PM | #3 | |
Captain
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Quote:
I think that the Z4M transmission have different internals, same ratio though. You shoud ask http://wanganstyle.com/ He seems to know his stuff and rebuilds transmissions regularly. |
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10-29-2014, 09:31 AM | #4 |
Major
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Over the years following various threads on lubrication, transmission mounts, shift problems..... for our Z4s, I can't remember anyone ever mentioning that there were trans differences between the M and Si cars.
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