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      12-09-2011, 03:10 PM   #2
v3.0si
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Drives: '08 Z4C 3.0si
Join Date: Sep 2010
Location: midwest

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Quote:
Originally Posted by -c- View Post
...problem is I have come to find out that the I and SI use different transmissions both automatic and manual, all have different part numbers...

...swap transmissions or torque converter as I’m not sure where the difference lies in the trans, they’re the same housing just something different that’s not listed.

any thoughts guys on what could be different between the transmissions on our cars between models? TRQ converter? other parts of some sort?
i think the only difference is the tq conv...

3.0i USA N52 trans PN = 24.00.7.573.807
3.0i USA N52 tq conv PN = not listed

2.5i ECE N52 trans PN = 24.00.7.573.807
2.5i ECE N52 tq conv PN = 24.40.7.585.401 (T85 = old)
2.5i ECE N52 tq conv PN = 24.40.7.588.738 (B121 = current)

3.0si USA N52 trans PN = 24.00.7.573.806
3.0si USA N52 tq conv PN = 24.40.7.585.400 (U85 = old)
3.0si USA N52 tq conv PN = 24.40.7.588.739 (A121 = current)

i don't see that anything else is different... BCM, trans hydraulic unit, brake booster, or otherwise... but that doesn't mean that the ratios are the same between the "806" and the "807". you're certainly blazing new trails. GL
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