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The Goodman 10716003 Natural Gas Orifice is a genuine OEM burner spud for AMH81405DXCB furnaces. The orifice threads into the manifold and meters the precise volume of natural gas fed to each in-shot burner, setting the furnace's BTU input. A drilled, corroded, or incorrectly sized orifice throws off the gas/air mixture and can cause sooting, poor efficiency, or flame problems.
Orifice bore diameter is engineered to the appliance's rated input and gas type. Using a mismatched drill size or generic spud results in over- or under-firing, which is both an efficiency and a safety concern. The OEM orifice guarantees the factory-specified natural-gas metering.
Moderate (3/5). Shut off the gas supply, remove the manifold or back out the old orifice with a nut driver/socket, and thread in the new one snugly without over-tightening. Leak-check with soap solution before restoring service. Best handled by a technician or experienced DIYer.