Johnson Pump Impeller Service Kit with spare impeller for maximum flow and long life made from Neoprene with a width of 63 mm (2.48"). A 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. Outer diameter: 95 mm (3.74"). Suitable for overhauling the following Johnson pumps: - F8B-5001 (10-13022-83 & 10-13022-99), 10-13022-95, 10-13022-96 & 10-13022-98) - F8B-8 (10-13021-1 & 10-13021-17), F8B-803 (10-13021-3), F8B-8007 (10-13021-9, 10-13021-91, 10-13021-92, 10-13021-95 & 10-13021-96), F8B-8037 (10-13021-11)