This pump is meant to be an exact replacement for Hartell GPP-1MH-1P 9161076-01. The issue we had was that the length of the pump shaft was slightly longer than stock, just enough that the water hose from the vaporizer didn't reach the 5/8 hose fitting on the pump. I had to lengthen the water hose by cutting it off and adding a "splice" that lengthened the hose just enough to connect to the new pump. Cornelius CCM0530WH1 Ice Cream Maker.