MC97 F6 Threaded Impeller - ReplacementA worn or damaged impeller can cause system failure or engine breakdown. SPX&';s Johnson Pump brand impellers are developed and manufactured for maximum flow and long life. With a genuine spare impeller, you can also be sure that you are getting the quality required by engine manufacturers and professionals.Features:Designed to fit Johnson Impeller Pump F6Specifications: Material: MC97 Pump: F6 Outer Diameter: 2.25" / 57.1mm Inner Diameter: Splines Width: 1.90" / 48.2mm