Its a lifeline for sure. The new one I got came with a spline that you would install on the steering column if there was not one there already. Those splines line up with the cars installed master spline. The new adapter will go in a small bit, but gets too tight to fully lock. It's like there is a small machining difference in the new and the old. I was thinking of just slowly filing down the splines on the new one and see what happened, but hoped somebody had already dealt with this first.