The 40W Light Bulb is an OEM replacement part for Whirlpool microwave ovens. It is a standard-size bulb designed to provide illumination inside the microwave cavity, allowing you to easily view and monitor the cooking or reheating process. Symptoms of a faulty microwave light bulb include: Dimming or flickering light during operation Complete bulb failure or no illumination within the cavity Discoloration or physical damage to the bulb itself Causes of a bad microwave light bulb can include normal wear and tear over time, electrical surges or voltage fluctuations, or physical impact or vibration during use. This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore microwave oven models.8206232A (AP4512653) replaces 8206443, 8183993, 0053437, 05200136, 05200137, 14209237, 14210453, 14210811, 14218311, 14218312, 14218318, 1890433, 2635-0004, 2635-0005, 2665-0003, 4158344, 4158365, 4158432, 4164062, 4166665, 4174608, 4338831, 4359625, 4393681, 53001372, 53422, 53437, 56001071, 56001089, 57001073, 7-47000, 7-47001, 747000, 747001, 8189961, 8204855, 8205422, 8205586, 8206232, AH2376034, EA2376034, PS2376034, R0712013, R0712015, R0713503, R9900310, W10321375, W10598935, Y0053422, Y0053437, Y05200136, Y05200137, Y747000, Y747001.