Description
The York S1-025-51756-000 is a genuine OEM straight flame sensor engineered for precise and dependable flame detection in York heating systems. Designed as a direct replacement, this sensor helps maintain safe and efficient furnace operation by accurately sensing the presence of a burner flame and signaling the control board to confirm ignition.
Key Features
- Genuine York OEM replacement part — SKU S1-025-51756-000
- Straight-style flame sensor rod for compatible York furnace applications
- Ensures accurate flame rectification signal to the furnace control board
- Helps prevent nuisance lockouts caused by a weak or failed flame sensor
- Direct OEM fit for simplified installation and reliable performance
- Supports safe furnace operation by confirming burner flame presence
Application
This flame sensor is designed for use in York furnaces and heating equipment that require a straight-style sensor rod. It is a critical safety component that detects the burner flame during the ignition sequence. If the control board does not receive a proper signal from the flame sensor, the system will shut down as a safety precaution. Replacing a worn or contaminated flame sensor with this genuine York OEM part restores proper system function and helps eliminate intermittent or failed ignition issues.
Installation Notes
- Always verify compatibility with your specific York model before installation
- Disconnect power before servicing the furnace
- Clean the mounting area and ensure a secure electrical connection
- Consult York equipment documentation or a qualified HVAC technician for guidance







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