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The Goodman 10716003 Natural Gas Orifice is a genuine OEM replacement machined for the GKS90904CXAB gas furnace and other compatible Goodman/Amana 90% AFUE models. The orifice is the precision-drilled brass fitting that meters natural gas into each burner. A worn, corroded, or incorrectly sized orifice causes poor flame quality, sooting, delayed ignition, or improper BTU input — all of which can trip the furnace on a limit or flame-sense fault. Installing the exact factory-spec orifice restores clean, efficient combustion.
OEM vs. Generic: Because orifice bore diameter directly controls gas flow and BTU input, this is a part where OEM matters. A generic or mis-drilled orifice can overfire or underfire the burner, wasting fuel and creating a safety hazard. This genuine Goodman orifice guarantees the correct manifold pressure and heat output engineered for your furnace.
Install difficulty: Moderate — requires shutting off gas, removing the burner assembly, and verifying manifold pressure after replacement. Best performed by a licensed HVAC technician. Always leak-check connections and confirm flame appearance after installation.