Bosch Oven Dual Bulb Thermometer 00490990, 1102350, 490990, 830031, 830189 OEM
Removed from working HBL555AUC double oven. This is the upper oven thermostat with two bulbs. One is hidden in the wall behind the convection fan and the other hangs in the wall cavity. They were marked during removal.
The thermostat was tested prior to removal. Oven was set to 350F and allowed to cycle for 45-60 minutes. The oven held at 350F the entire time.