You may want to check, but I think that part number has been superseded by 0450046-5. At least that was the case when I replaced mine 2 years ago.
Doesn't appear to make the search for the part any cheaper, but the -5 felt thicker to me than the cracked one I took off. It may have been my sense of touch justifying to my brain that I just spent so much on a piece of stamped metal.
Jacob