The OM75P-21-ESGN is a genuine Samsung Magnetron - 1000 Watts. The Samsung OM75P-21-ESGN generates microwave energy. The microwave energy travels through a waveguide and is distributed into a metal cavity where the food is cooked. Quality tested for excellent performance as per the Samsung's standards It is recommended to either refer to your appliance service manual, contact your appliance manufacturer, or contact a service professional to validate the needed part number for your appliance prior to purchasing. The Samsung OM75P-21-ESGN Magnetron - 1000 Watts fits the following brands of microwaves: Samsung The Magnetron - 1000 Watts fits in these series washers: Kenmore 401 and Samsung ME16, ME17, ME18, ME20, ME21, SMH16, SMH17, SMH18, SMH19, SMH21 and SMH91. Magnetron OM75P-21-ESGN.