Two Pack Furnace Flame Sensor Replacement by BlueStars for Rheem Ruud WeatherKing Thermal Zone and DuroGuard 62-23543-01, 4 x 1.6 Inch, 90 Degree Sensor Replaces 62-23543-02 03 04

Two-Pack Flame Sensor for Rheem/Ruud Furnaces, 4x1.6 in
✔️ 90° sensor, 4x1.6 in, stainless rod, ceramic insulator, easy install

This two-pack replacement flame sensor provides reliable flame detection inside gas furnaces and is commonly used on Rheem, Ruud, WeatherKing, Thermal Zone, and DuroGuard units that require part numbers in the 62-23543 family. It ensures the burner is present before the furnace runs, shutting off gas if the flame is lost for safety.

✅ Replaces part numbers 62-23543-01, 62-23543-02, 62-23543-03, 62-23543-04
✅ 4 in x 1.6 in 90-degree sensor design for proper flame detection
✅ Stainless steel rod and 100% ceramic insulator for durability
✅ Pack of 2 sensors included for quick replacement

💡 What is a furnace flame sensor used for and why replace it?

It detects flame presence to prevent gas leaks and unnecessary fuel use; replacing it restores safe, reliable burner operation.

- Detects flame presence and signals control board to shut off gas if flame is lost
- Helps reduce gas leaks and unnecessary fuel usage
- Handy to have on hand for common Rheem/Ruud installations