Product Overview:
The Fyizo FYZ-01-FS03 is an original OEM-quality flame sensor designed as a direct replacement for the Lennox 51M14. It ensures accurate flame detection, dependable ignition control, and safe furnace operation. Built to match OEM specifications, this flame sensor provides reliable performance for both residential and light commercial heating systems.

Key Features and Benefits:
This replacement flame sensor is designed to match the exact dimensions and functionality of the Lennox 51M14 for a perfect fit. It delivers precise flame monitoring to prevent ignition issues and maintain stable furnace operation. The stainless steel probe and ceramic insulator provide strong resistance to heat and corrosion, ensuring long-lasting performance. Installation is quick and simple with no adjustments or wiring modifications needed. Each sensor is factory tested for quality and reliability to meet OEM standards.

Specifications:
Brand: Fyizo
Part Number: FYZ-01-FS03
Replaces: Lennox 51M14
Type: Flame Sensor Assembly
Material: Stainless steel rod with ceramic base
Application: Gas furnaces and HVAC ignition systems

Weight and Dimensions:
Weight: 0.08 lb
Length: 3.75 in
Width: 0.5 in
Height: 0.5 in

Additional Information:
The Fyizo FYZ-01-FS03 provides the same high performance and reliability as the original Lennox 51M14 flame sensor. It helps maintain safe operation, consistent ignition, and efficient heating output. Compatible with select Lennox, Armstrong, and Ducane furnace models, this sensor ensures dependable ignition performance throughout the heating season.

Using Fyizo OEM replacement parts helps reduce system downtime, extend furnace life, and maintain factory performance. The FYZ-01-FS03 offers OEM-level accuracy, easy installation, and long-term durability for trusted HVAC operation.