Input Bearing Cup large (A568 transmission) Shelby Dodge
 
Mopar part number:  4746921
 
 
I believe this also superceeds to Mopar part number 5205567 but please check with your dealer to be sure.
 
This is the larger bearing cup for your Input Shaft (of your A555, A520, A523, or A568 transmission).  It may fit other transmissions as well.    Your input shaft essentially has two different size bearings (a large and a small) and to go along with those bearings there are "bearing cups" which is what those bearings ride on.   These are those cups.
 
We have a total of 7 as of this writing.   Price is for 1.