They are the same OEM component and are fully interchangeable in all supported Lennox applications

This Norton series ignitor includes a factory-installed ceramic holder and 5-inch lead wires with a plug-in connection for straightforward field installation

The DFS-301-112 air pressure switch feature dual 1/4" barbed sample line connections that are compatible with standard 1/8" to 1/4" ID flexible tubing

making it suitable for most fractional and small integral horsepower motor control tasks

inspecting the electrode for carbon fouling or hairline ceramic fractures is your first move

York S1-022-06844-051 Metering Device Els PW 17895 They are the same OEMThe York S1 022 06844 051 Metering Device is a mission critical component engineered for precise refrigerant flow control in residential and light commercial HVACR systems. As a genuine OEM York replacement part, this expansion device is designed specifically for R 410A refrigerant applications, ensuring the evaporator coil receives the exact mass flow required for optimal heat transfer. By maintaining the correct pressure drop across the liquid line