Description
The York S1-9951-1041 is a genuine OEM LP (liquid propane) gas orifice designed for use in compatible York furnaces and heating equipment. Precision-drilled to a #37 drill size with a .104″ orifice diameter, this component ensures accurate gas metering and consistent fuel delivery to the burner assembly — critical for safe, efficient, and reliable furnace operation.
Key Features
- Genuine York OEM replacement part
- #37 drill size with .104″ orifice diameter
- Designed for LP (liquid propane) gas applications
- Precision-machined for accurate gas flow metering
- Ensures proper combustion and burner performance
- Direct OEM fit for compatible York furnace models
Why Orifice Size Matters
The orifice is a critical component in any gas-fired appliance. The precisely drilled opening controls the flow rate of fuel gas entering the burner, directly affecting combustion efficiency, heat output, and safety. Using the correct OEM orifice — matched to the fuel type and appliance model — ensures the burner operates within designed parameters and meets safety standards.
Application
- Replacement LP gas orifice for compatible York furnaces
- Suitable for LP/propane gas fuel systems
- Ideal for HVAC technicians performing furnace maintenance, repair, or gas conversion service
Specifications
- Brand: York
- Part Number: S1-9951-1041
- Orifice Drill Size: #37
- Orifice Diameter: .104″
- Fuel Type: LP (Liquid Propane)







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