A used but in excellent condition, Getrag five speed overdrive transmission off a 1982 320I. This is the preferred 3 piece transmission for the 2002, 4 to 5 speed or automatic to manual swap.
This transmission shifts up and down with ease, very little, almost no "fuss" or powdery accumulation found in the magnetic drain plug.
There were no leaks noticed but the rear seals will need to be replaced.
The output flange is a 3 bolt type so you will have to either get a four bolt flange if using your existing 2002 drive shaft or convert the drive shaft to a three bolt to work with this transmission.
These are getting harder to find, do not miss on this one!