Lennox 12F19 Flame Sensor for Gas Furnaces Burners, Orifices & Combustion Parts

The Lennox 12F19 is a genuine OEM flame sensor designed to ensure safe and reliable operation of your gas furnace. This critical safety component verifies the presence of flame during the heating cycle, preventing gas flow when no flame is detected and protecting against dangerous ignition failures or system lockouts.

Key Features:

• Genuine Lennox OEM replacement part
• Stainless steel sensing rod measuring 0.094" diameter x 0.922" length
• High-temperature ceramic insulator for durability under extreme heat
• 18 AWG gauge wire with 1/4" spade terminal connection
• Screw-mount bracket with 0.578" locating dimension for precise installation
• Operating temperature range: -40°F to +1000°F

Compatible Models: This flame sensor is used on Lennox G12E, G16, and GCS10 series gas furnaces. Also fits select Ducane and Armstrong models. Replaces obsolete part number 12F1901.

When your furnace flame sensor becomes dirty or fails, it can cause nuisance shutdowns and heating system lockouts. Regular inspection and replacement of this essential safety component helps maintain proper furnace operation and prevents costly service calls.