Installation Location: In the microwave cooking cavity at the model-defined turntable drive/support position.
Function: Supports or transfers drive motion to rotate the cooking tray.
Specific Identification Details: Exact fit is determined by the complete appliance model, installation position and OEM part number.
Critical Fit / Identification Details: Match the complete model, tray diameter where applicable, hub/shaft geometry, support pattern and exact OEM part number.
Manufacturer Part Numbers / Cross-References: 3390W1A044B
What This Listing Includes: One genuine OEM 3390W1A044B microwave glass cooking tray / turntable.
Model Evidence Note: Model-first verification is required; no incomplete model list is presented as a complete fit list.
Compatibility Basis: Exact OEM part number, appliance application and model-first verification.
Correct Part / Compatibility Check: Confirm that 3390W1A044B (or a verified manufacturer supersession shown above) is specified for the complete appliance model, then match the exact installation position and identification details before ordering.
Distinguish From Similar Parts: The glass tray, roller ring and drive coupler/support are separate components.
Possible Related Symptoms / Reasons to Inspect: A tray that does not rotate, slips or sits unevenly may justify inspection of the entire turntable system.
Important Safety / Service Note: Disconnect microwave power before service beyond removable cavity accessories.
Ordering Note: Symptoms can identify a system to inspect, but they do not prove this specific component is defective. Confirm the exact OEM part number and model-specific parts diagram/service information before ordering.