The 354081 is the replacement sensor probe only

this heavy-duty relay is activated by a standard 24V coil

maintaining the structural integrity of the burner's flame path

these seals prevent bypass air from compromising the heat exchanger’s integrity

York S1-024-39716-000 Pressure Switch 322057-301 The 354081 is the replacementMaintain precise combustion control and system safety with the York S1 024 39716 000 Pressure Switch. This genuine OEM replacement part is factory calibrated to a 0. 20" WC (Water Column) set point, specifically engineered for induced draft furnace draft monitoring. As a critical safety interlock, it verifies that the combustion blower is moving sufficient air to exhaust flue gases before allowing the ignition sequence to proceed. It is a direct fit