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Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
Note that your choice of sleeve will determine the final tolerance for angular and parallel misalignment
37" WC setpoint is accurate to factory specs
this 1/4" orifice is compatible with pilot-operated 243-RPC units
plunger tube
including the FE50-165 series
Armstrong Furnace R42640-001 Ignitor/Sensor 30067439-890 Note that your choice ofThe Armstrong Furnace R42640 001 Ignitor Sensor is a critical OEM replacement part designed for precise ignition and flame rectification in residential HVAC systems. Engineered as an ignitor sensor less pilot assembly, this component ensures reliable burner cycles by providing the necessary spark and feedback signal to the furnace control board. Transitioning to a high performance silicon nitride ignitor configuration often improves longevity over