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The Goodman 0163F00018 Natural Gas Orifice is a genuine OEM burner spud for the AMVC81005CXAA gas furnace. Threaded into the manifold, this precision-drilled orifice meters the exact volume of natural gas delivered to each burner. The bore size is matched to the furnace input rating and gas type so the burner produces a clean, correctly sized flame and the furnace fires at its rated BTU output.
Orifice drill size directly controls the gas-to-air ratio. The OEM 0163F00018 is bored to the precise size certified for your furnace's BTU input and natural-gas supply. An incorrect generic orifice can cause sooting, delayed ignition, poor flame, or unsafe combustion. Always match the OEM part number and confirm gas type.
Rated 3 of 5. Shut off gas and power, remove the burner, and thread the orifice into the manifold to the correct torque. After installation, a combustion/manifold-pressure check is recommended. Because this affects combustion, gas orifice work is best performed by a qualified technician.
Ships new as an exact-fit natural gas orifice for the AMVC81005CXAA.