Aftermarket Ford Mustang replacement keys: 33 in-stock listings for model years 2005–2022, including key fobs, from $17.10. Common FCC IDs: M3N-A2C31243300, CWTWB1U793, CWTWB1U331. Match the FCC ID and part number on your current key, or use our free VIN lookup. Keys are not OEM and most need cutting or programming; eligible items can be returned within 90 days.