Aftermarket Chrysler 300 replacement keys: 54 in-stock listings for model years 2005–2023, including key fobs, from $15.90. Common FCC IDs: M3N-40821302, IYZ-C01C, KOBDT04A. 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.