This item is the top chain gear for all FL model caroni tillers. Caroni part number is FL06100. This will fit the following Caroni models. FL0800ASC, FL0900ASC,FL100ASC, FL1200ASC,FL1300ASC,FL1400ASC- your tiller may or may not have the ASC following the number which doesn't matter. This is the OEM replacement gear. If you need something you don't see please do not hesitate to call us at 888-237-5848 or email us at parts@gaequipment.com.