Lennox 79J21 Ignitor whereas a single-pole unit only

whereas a single-pole unit only breaks one line

requirements allows for proper gas pressure regulation and prevents the equipment from operating outside its intended set point

It features a 1/4-inch hub bore with a CCW (Counter-Clockwise) rotation as viewed from the discharge side

Precision-threaded design allows for straightforward removal with a standard 1-5/8" hex socket

Lennox 79J21 Ignitor whereas a single-pole unit onlyThe Lennox 79J21 Ignitor is a heavy duty, genuine OEM electrode designed specifically for high demand residential and commercial furnace applications. As a dual purpose Lennox spark ignitor and flame sensor, this component provides the high voltage arc necessary for rapid gas ignition while simultaneously monitoring the burner flame to ensure safe, continuous operation. This furnace ignitor replacement is built using a glazed L 5 steatite insulator