York S1-9951-0861 Gas Orifice this part is specifically for

this part is specifically for natural gas burner systems

and Luxaire manifold assemblies

When troubleshooting HVAC error codes related to open or shorted sensors

using this genuine S1-9951-1611 gas orifice maintains the appliance's original efficiency ratings and flame stability

blocked return vents

York S1-9951-0861 Gas Orifice this part is specifically forThe York S1 9951 0861 #44 Gas Orifice is a high precision LP gas conversion component engineered specifically for York heating systems. This OEM replacement orifice features a #44 drill size with a 0. 0860 inch diameter, precisely calibrated to regulate liquid propane flow at 11. 0 inches Water Column (W. C.). Designed for robust performance in multi stage gas furnaces and boilers, this part ensures stoichiometric combustion to prevent soot buildup