Replace old Emerson pump motor

Have an Emerson 1081 motor which I would like to replace.  Model is C55CXKLS, 1 HP, S.F. 1.25, Frame 48Y.  My pump runs with no leaks, but the flow is greatly diminished from previous, so thinking I may also need a new impeller as well- especially if I need to upgrade in HP to match.

PLease advise what I may need, along with appropriate kits.

We’d be glad to assist you. What is the make and model of your pump? That will help us determine the correct impeller.