The Halogen Light Bulb is an OEM part for GE microwaves and ovens. It provides interior lighting, allowing you to clearly see the contents inside the appliance during operation. This illumination is essential for monitoring cooking progress and ensuring safety. You should replace the halogen light bulb if it burns out or becomes damaged. Causes of a bad halogen light bulb can include regular use over time, electrical surges, or physical impact that can cause the bulb to break. Symptoms of a bad halogen light bulb include: The light not turning on when the microwave or oven door is opened Flickering or dim lighting inside the appliance A burnt-out appearance or visible breakage in the bulb This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.WB25X10019 (AP4380308) replaces WB36X10344, 1472843, AH2351821, EA2351821, PS2351821, WB08X10050, WB36X10246.