The ID numbers are stamped into the case on a verticle surface right above the pan on the right side (pass side). There will be the part# first then the full trans number. The one I just looked at was like this.

126 270 xx 01 722.400 02 xxxxxx



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Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician