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The Goodman 10716003 Natural Gas Orifice is a genuine OEM burner spud that meters the natural-gas flow into the in-shot burners of Amana/Goodman AMH80905CNAB 80% AFUE furnaces. Precisely drilled to the factory orifice size, it sets the burner's BTU input and air-fuel mixture for clean, efficient combustion. One orifice threads into the manifold ahead of each burner.
The OEM Goodman orifice is bored to the exact drill size specified for this furnace's input rating and altitude, which is critical for safe, correct firing. The generic equivalent matches thread and orifice size at a lower cost — always verify the drill number against your furnace's rating plate before installing.
A clogged, damaged, or wrong-size orifice causes weak or oversized flames, poor combustion, sooting, or nuisance limit trips. A cracked spud can leak gas and must be replaced immediately.
Moderate (3/5) — Shut off gas and power, then unthread the orifice from the manifold with a wrench and install the replacement with proper thread sealant rated for gas. Confirm orifice size and check for leaks with soapy water. Professional installation recommended; 20–30 minutes.