Description:

2025 Upgrade 18G89 Furnace Flame Sensor for Lennox Armstrong. This essential replacement part detects the presence of a flame and sends an electrical signal to the central controller to ensure safe and efficient heating operation.

• Part Number: 18G89
• Compatibility: Replacement for Lennox Armstrong number 18G8901
• Total Length: 3 1/8 inch
• Model Number: K-6272-02
• Performance: Designed for precision fit and optimum performance in furnace applications
• Installation: Easy to install and use
• Package Includes: 1 Pack Furnace Flame Sensor