Fits Shark ZU503AMZ ZU503 Navigator Lift-Away Upright Vacuum This item is a wearable part. Per manufacturer, normal wear and tear of wearable parts, which require regular maintenance and/or replacement to ensure the proper functioning of your unit, are not covered by this warranty. For Return and Refund, please refer to Amazon’s Return and Refund policy. This is an OEM part, # 751F503AMZ Replacement Motorized Power Floor Nozzle Head for Shark ZU503AMZ ZU503 Navigator Lift-Away Upright Vacuum