Johnson Pump 6 Blade Water Pump Impellers

Outside diameters differ from 39.6 to 50.8 mm

JOH09-806B has a listed outside diameter of 39.6 mm, while JOH09-1026B is listed at 50.8 mm. Keep diameter with the exact reference and other dimensions; the shared category does not establish the same impeller size or pump fitment.