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The Goodman 0130F00010S flame sensor is a genuine OEM replacement for the GDT045-3 gas furnace. The flame sensor (flame rod) confirms that a flame is present after ignition using microamp flame rectification. When it fails or oxidizes, the control board shuts off the gas valve as a safety measure — causing the classic symptom of a furnace that lights briefly then shuts down (short-cycling) or won't stay lit.
The OEM 0130F00010S uses the correct rod length, alloy, and bracket geometry so it sits precisely in the flame path for a reliable microamp signal. Generic sensors often have incorrect rod positioning, producing weak or intermittent signals that mimic the very failure you are trying to fix. OEM gives you a clean, dependable flame signal.
Easy (1/5). Turn off power, remove one screw, unplug the wire, and swap in the new sensor. No calibration required. A gentle cleaning of the burner area is recommended during replacement.