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The Goodman 10716005 Natural Gas Orifice is the genuine OEM burner spud that meters gas flow into the in-shot burners of your Amana AMVC81005CNBA furnace. The orifice's precisely drilled bore sets the gas rate for each burner, controlling BTU input, flame quality, and combustion efficiency. Even a slightly off-size orifice changes firing rate and can cause sooting or under-firing.
Orifice bore size is the single most important dimension in gas metering. The OEM 10716005 is drilled to Goodman's factory drill size for the AMVC81005 input rating, guaranteeing correct BTU delivery and a clean blue flame. Generic or mis-sized orifices can over- or under-fire the furnace, producing carbon monoxide, sooting, or nuisance lockouts.
Replacement requires shutting off gas and power, removing the manifold or burner, and threading in the correct-size orifice. Confirm the orifice size matches the furnace rating plate and altitude requirements, then verify manifold pressure and flame after installation. A licensed HVAC technician is strongly recommended for gas-metering work.