21500-TC Thermocouple 33 Inch fits 21500 Bracket with Center Retainer Screw

The 21500-TC Thermocouple is the OEM replacement thermocouple for many of the vent-free natural gas and propane wall heaters, fireplaces, and gas logs produced by several different manufacturers.
Please note this is the newer smooth body style thermocouple

This thermocouple provides a millivolt signal to the gas valve allowing the appliance to stay running.

If this thermocouple has become weak it will not allow the pilot light to stay running and your heater will completely shut down.

This thermocouple 21500-TC is approximately 33 inches long and fits heaters, gas logs, and fireplaces from the following manufacturers:

Service Note:

The flat spot on the outside copper coating of this thermocouple is NOT a defect. 

This flat spot is there from the manufacturing process to allow a place to stamp the part number as well as prevent the thermocouple nut from sliding down the copper wire.