The Frigidaire 513605540 Refrigerator Compressor Start Relay AZ72931 by AZParts is a replacement part specifically designed for various Frigidaire refrigerator models. This set includes a start relay, essential for starting the compressor to keep your refrigerator running smoothly. With this high-quality replacement part, you can ensure your refrigerator continues to function properly without the need for a complete compressor replacement. This product is a reliable and efficient solution for maintaining your Frigidaire refrigerator's performance.