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The genuine Goodman 0163F00018 Natural Gas Orifice is a precision-drilled burner spud for the Goodman/Amana AMVC80604BXAA two-stage variable-speed 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 sized flame. Even a slightly wrong drill size changes firing rate and combustion quality, so an exact-match orifice is essential.
The OEM 0163F00018 is drilled and gauged at the factory to the exact orifice number specified for this model's input rating. Generic orifices can vary in bore diameter, producing over- or under-firing, sooting, or lockouts. For a component that directly controls gas input and combustion safety, OEM is strongly recommended.
Threads into the manifold in place of the old orifice. Shut off the gas supply and power, remove the burner or manifold as needed, unthread the old spud with the correct wrench, and hand-start the new one to avoid cross-threading before final tightening. Typically 15–30 minutes. After installation, confirm manifold pressure and inspect flame appearance.
Fits Goodman and Amana AMVC80604BXAA natural gas furnaces.