The swivel assembly (12170000004327) is a genuine part for your Midea over-the-range microwave. A worn or damaged swivel can cause uneven cooking or prevent your microwave from operating smoothly. If your microwave tray is not rotating as it should or is making unusual noises, it's time to replace the swivel assembly. This replacement part ensures your appliance functions as expected, helping you keep your microwave in top shape. Verify your microwave's model number for compatibility before purchasing.