Coleman Furnace replacement thermocoupler or bulb

[shrike]

I have a coleman furnace model 4016A.  I have come to the conclusion that the thermocoupler or thermal bulb is bad. it does not extend to hold the gas valve in the open position when the bulb is warmed by the pilot light. Does anyone know if there is anything I can use as a replacement?

[Oz]

Try Dinosaur Electronics

[RANGERRICK]

I don't think it is replaceable.It is built into the gas valve.