This is a magnetron that is used on microwave ovens. The purpose of the magnetron is to provide the microwaves that actually cook the foot inside of the microwave oven. Use caution when replacing this part. High-voltage capacitors in microwaves can retain a deadly amount of electrical charge, even when they are unplugged.If the microwave begins making a buzzing noise and doesn't heat food properly, this part will need to be replaced. Use extreme caution when working with this appliance. Unplug the unit first.This particular magnetron is compatible with microwave ovens that are manufactured by the General Electric, Hotpoint, and Maytag brands. This part is sold individually and is sourced directly from the manufacturer as a genuine OEM part.WB27X10585 (AP3191536) replaces 946814, AH239727, EA239727, PS239727, WB27X0706, WB27X0950, WB27X10082, WB27X10103, WB27X10362, WB27X706, WB27X950.