Diffuser, 2HP Full Rated thru 3HP Up Rated, High Pressure Models.

For Use With: Model AF-75, AFP-75 Waterfall®, 2 hp Full Rated Thru 3 hp Up-Rated Challenger® High Pressure Pumps 2F, 2-1/2 A Built Prior to 10-1-92, Must Replace with Both Diffuser and Impeller