Lennox 69W43 Furnace Flame Sensor Kit with 90 Degree Crook

The Lennox 69W43 Flame Sensor Kit is a genuine OEM replacement component designed to ensure reliable furnace ignition and safe operation. This precision-engineered sensor detects the presence of flame in your furnace burner assembly, allowing the gas valve to remain open during normal heating cycles.

Key Specifications:

• Rod Diameter: 0.114 inches
• Rod Length: 0.5 inches
• Overall Width: 4.687 inches
• Features 90-degree crook bend approximately 1.31 inches from end for proper positioning
• Maximum temperature ratings: 2190°F (rod), 1000°F (ceramic), 250°F (insulation), 2600°F (service)

Kit Includes:

• (1) PSE-L79 Precision Speed Equipment Flame Sensor

This sensor kit is also known by cross-reference numbers LB-74940B and AST69W43. The flame sensor rod uses a ceramic insulator and is built to withstand extreme furnace temperatures while maintaining accurate flame detection. When your furnace fails to ignite or shuts down unexpectedly, a faulty flame sensor is often the culprit—this direct replacement restores proper function and safety.