Originally Posted by Roman D

Hi, all bolts are accessible from transmission side.
Both driveshafts need to be disconnected, rear unbolts from transfer case side and and be left hanging with some kind of support, front one unbolts from differential side and can be left on transfer case that also have to come off, after removal of all of bellhousing bolts (2 of them holding starter) transmission can be removed and rear seal is right behind flywheel.. BMW recommends most of those bolts to be used only once, especially on flywheel so order some.. Check your flex disks, make sure they're good otherwise order new ones. Also, somewhere on this forum I've read that sometimes valve cover gasket leaks at the rear and oil finds its way in to bell housing and drips at the bottom of it looking just like it is a bad rear crankshaft seal, make sure it is not your case because this is a descent size job to do or pay for and then you will wind up changing valve cover gaskets anyway.