Hi, I just picked up the new B2 piston for my 83 300SD and it looks different (then again mine was in pieces). The part number on the Mercedes box is A 107 270 04 32. It looks as though it may fit. I am going to try it. I have one question.

The dogbone that came out of the trans has two different ends. One end has three ridges on the shaft the other has none. Which way does it go in?
Thank you - Dennis