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The Goodman 0163F00018 is a genuine OEM natural gas burner orifice (spud) machined for the Amana/Goodman AMVC80805CXAA two-stage gas furnace and compatible 80% AFUE models. The orifice meters the precise volume of natural gas delivered to each burner, setting the flame size and combustion efficiency. A damaged, corroded, or incorrectly sized orifice causes lazy or noisy flames, sooting, delayed ignition, or improper firing rate — replacing it with the correct drill size restores clean, efficient combustion.
Orifice bore size is calibrated to the furnace's rated input BTU and manifold pressure. The OEM 0163F00018 guarantees the exact drill size and thread pitch. Generic orifices risk over- or under-firing, poor combustion, and elevated CO — do not substitute a mismatched bore. For LP/propane conversions, a dedicated conversion kit is required.
Rated Moderate (3/5). Requires shutting off gas, removing the manifold or burner assembly, and threading in the new orifice with proper alignment. Combustion should be verified with a manometer and combustion analyzer after service. Because it involves the gas train, professional installation by a licensed HVAC technician is strongly recommended.