So the part number and even the model number for my pump matched for this order but since my 15500 is over 15 years, it seems that the handle has been modified a bit over the years. The original one had become brittle and broke from years of use. The front two screws line up just fine, but he back screws have been moved forward. To workaround, I had to drill a couple of extra holes, get some extension nuts to hold the back on which was a bit of a pain. I purchase a new cord since mine was originally hard-wired and drill a hole inside for a sensor that was in the handle. In the end, it all worked out and my artifact 15500 is still running solid. Hopefully, I'll get another 15 years our to this one.