Cross Reference: Sterling J31R01871, 11J31R01871, McMillan A0516A2160, 2160S, Fasco 7151-1944, 7151-2213, 71511944, 7151-0101 7151-0103, 7151-2213, Century/AO Smith 322P205, 322P206, Dayton 1VLC5, Other UT51A1CG-A2565, UT51A3AY-A2763, 978 Fits Units: QV Series Sizes 30, 45, 60 & 75 - After June 2006 the shaft diameter changed so please double check that your old motor shaft diameter is 3/8" dia.