The impeller works fine but just don't order it from Ozbo, otherwise you may never get the model you ordered. I found that out the hard way after they sent me the wrong model and size for a different pump. When I made them aware of their mistake after I got it, they "corrected" their mistake even further by sending the correct one to a wrong address on the other side of the country. Needless to say I never got the one I ordered and ended up having the scavenge parts from the wrong new one to rebuild my old one so it fit my old pump. Certainly not the ideal way of doing it, but their bad service left me no other choice.