The Heil Quaker ICP 1008676 Collector Box Gasket is a critical OEM sealing component required for maintaining the pressure integrity of the condensing furnace secondary heat exchanger

OEM Reliability: Genuine Johnson Controls part ensures dimensional accuracy and material performance

the 21-038 provides a constant pilot air supply

Standard orifices like the 79L55 are typically rated for natural gas

While the switch is designed to trip at 145°F

Lennox 21L99 Flame Sensor The Heil Quaker ICP 1008676Professional grade Lennox 21L99 Flame Sensor is a critical OEM replacement part designed to maintain pilot and burner safety through precise flame rectification. As a veteran preferred component, this sensor is engineered to monitor the furnace flame and provide the necessary DC microamp signal to the control board, ensuring the gas valve remains energized only when a safe ignition is confirmed. It serves as a direct OEM replacement for the Lennox