The Motor Spacer is an OEM part for Whirlpool microwaves. It is designed to support and position the turntable motor, ensuring it stays aligned and functions correctly. This spacer helps maintain the stability of the turntable, allowing even and consistent heating of food. Causes of a bad motor spacer can include wear and tear over time, physical damage from heavy use, or misalignment due to accidental impacts. Regular inspection and maintenance can help identify issues before they lead to motor malfunction. Symptoms of a bad motor spacer include: The turntable not rotating properly Unusual noises coming from the turntable area Inconsistent heating or cooking of food The turntable being unsteady or wobbling This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.8184109 (AP3128340) replaces 4393588, 8206101, 906331, AH392038, EA392038, PS392038.