NEW 40W Bulb for GE Microwave Lamp part number WB25X10030 Suitable for GE PART NUMBER WB25X10030. WB25X10030 replaces only WB25X10030 applications, and is not intended to replace any other application. Research the number on your old part or the model / serial number of your appliance to verify this is correct for your application prior to ordering. If you are unsure this item (you are purchasing) will solve your issue or is correct for your application, please do not purchase this item. This item is exactly as described.