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The Goodman 10716003 Natural Gas Orifice is a genuine OEM precision-drilled brass burner spud for the GKS90905DXAC gas furnace. The orifice meters the exact volume of natural gas delivered to each burner, setting the furnace's BTU input and ensuring a clean, correctly proportioned flame. An out-of-spec orifice causes sooting, delayed ignition, or unsafe over-firing.
Orifice drill size is fuel- and model-specific — a fraction of a millimeter changes the firing rate. The OEM 10716003 guarantees the factory-calibrated bore for safe, efficient combustion on natural gas. Generic or LP-converted orifices can dangerously over- or under-fire the burner and should never be substituted by size guesswork.
Moderate (2 of 3). Shut off the gas supply and power, then unthread the old spud from the burner rail with the correct nut driver and install the replacement without cross-threading. Because this component directly affects combustion, we recommend verifying manifold pressure and flame quality after replacement — ideally with a qualified HVAC technician.