Impeller Replacement KitA worn or damaged impeller can cause system failure or engine breakdown. Johnson Pump brand impellers are developed and manufactured for maximum flow and long life. With a genuine spare impeller from Johnson Pump, you can also be sure that you are getting the quality required by engine manufacturers and professionals. Johnson Pump: 09-701B-1Sherwood: 9959KJabsco: 18838-001Engines/Pump:Chris Craft; Chrysler Marine; Commander; Crusader; Glastron Boat Co.; Gray Marine; Interceptor; Onan; OMC; Pathfinder VolksWagon Eng.; Perkins Eng. U.S.; Plesurecraft Marine; Universal Medalist; Volvo Penta; Yamaha; Westerbeke 24102; Sherwood 11353; Pleasure Craft 302 & 351; Chris Craft 350; Onan MDL3,4