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The Goodman 10716005 is a precision-drilled natural gas burner orifice (spud) for the GDH80403ANBD 80% AFUE gas furnace and related Goodman/Amana models. The orifice threads into the manifold and meters the exact volume of natural gas delivered to each burner, setting the furnace's rated BTU input. A correctly sized orifice ensures clean, blue-flame combustion, proper flame carryover, and safe, efficient heating. A worn, clogged, or wrong-drill orifice causes lifting flames, sooting, delayed ignition, or under-firing.
Orifice drill size directly controls firing rate and combustion safety, so the OEM 10716005 is the right call — it guarantees the factory-specified bore and thread. Generic orifices vary in drill tolerance; an incorrect size can create a carbon-monoxide hazard. Do not use an LP orifice on natural gas.
Moderate (3/5). Shut off gas and power, remove the manifold or burner assembly, and swap orifices with a properly sized wrench — do not over-torque or damage the seat. Leak-test all connections with soap solution and verify flame appearance after reassembly.