I have a 63 C60 with a 2 speed rear axle. I am replacing the wheel bearings and there is a spacer in the hub about an inch wide between the outer bearing race and the splined part of the hub. I need to replace this because it is damaged and I don't really know what it is called so the guy at the parts store can look it up. Anybody know what the proper term for it is or maybe have a part number?