The Lamp is an OEM part for Whirlpool microwaves. This lamp illuminates the interior of the microwave, allowing you to see the cooking process and monitor the condition of your food. Causes of a bad lamp can include regular use leading to burnout, electrical issues causing the lamp to fail, or physical damage from impact or mishandling. Symptoms of a bad lamp include: The microwave interior not lighting up when the door is opened or during cooking Flickering or dim lighting The lamp failing to turn on despite replacing the bulb This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.8204670 (AP3180923) replaces 1018246, 8169418, 8184302, 8185188, AH886465, EA886465, PS886465.