At the weekend it was finally so far that I have installed the cheap partly leather sports seats of the Audi 100/200. There was only one problem, at the passenger seat on the rail outside there is such a plastic part running in the rail. Does anyone know what part number this is? Or maybe someone in which car these seats were actually in? Maybe that's how I get to that thing. The plastic part on the "old" V8 seats did not fit because it slipped back and forth...

Greetings Rainer