Product Overview:
The Fyizo FYZ-01-FS05 is an original OEM-quality flame sensor designed as a direct replacement for the Lennox 43K53. It ensures accurate flame detection, consistent ignition control, and safe furnace operation. Built to meet Lennox OEM specifications, this sensor provides long-lasting reliability for residential and commercial HVAC systems.

Key Features and Benefits:
This replacement flame sensor is manufactured to match the original Lennox 43K53 for exact fit and dependable function. It provides precise flame monitoring to prevent ignition failures and maintain stable system operation. The stainless steel probe and ceramic base are designed to withstand high heat and corrosion, ensuring extended service life. Installation is quick and easy with a direct-fit design that requires no wiring or mounting modifications. Each unit is tested to meet OEM performance standards for safety and reliability.

Specifications:
Brand: Fyizo
Part Number: FYZ-01-FS05
Replaces: Lennox 43K53
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-FS05 delivers the same precision and performance as the original Lennox 43K53 flame sensor. It helps ensure safe and efficient ignition, protecting your furnace from operational faults and maintaining energy efficiency. Compatible with many Lennox, Armstrong, and Ducane furnace models, this sensor offers dependable performance throughout the heating season.

Using Fyizo OEM replacement parts helps extend equipment lifespan, prevent ignition problems, and maintain factory-level performance. The FYZ-01-FS05 combines durability, accuracy, and easy installation to keep your HVAC system running smoothly year after year.