ON WHIRLPOOL MICROWAVE OVEN 115 VOLTS WHEN INSTALLING MAGNETRON MAKE SURE WOVEN METAL GASKET AT BASE OF ANTENNA IS PROPERLY SEATEDIMPORTANT ALWAYS REPLACE DIODE WHEN REPLACING THE MAGNETRON - ALL MAGNETRONS SOLD BY EDGEWATER PARTS HAVE THE DIODE INCLUDED AT NO CHARGE Replaces: 4392006, 4158473, 4158589