Hello I need help locating a part that needs to be replaced on my 2009 dodge journey, I was told by my mechanic that it is a $400 part that needs to be ordered through the dealer and by using the VIN# of my truck. I was also told by my mechanic that the part is (the right inner axel shaft that connects to the transmission)

THE PICTURE ON THE BOTTOM LEFT IS THE PICTURE THAT NAPA AUTO PARTS LOCATED MY MECHANIC SAID IT WAS NOT THE CORRECT PART, THE PICTURE ON THE BOTTOM RIGHT IS THE ONE MY MECHANIC TOOK. SOMEONE PLEASE HELP