Gas oven temp probe / sensor for Frigidaire stove is 10" long . I see only reference to 3" long and 6" long?

Your range has the old style thermostat. You have to get the entire device because it's one piece basically a capillary tub filled with gas contected to a diaphram in the switch. Here is the part number 316028600, sshope around because it is not cheap.231.89 at sears parts direct. Good luck.