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The Goodman 10716005 Natural Gas Burner Orifice (spud) is the genuine OEM metering orifice for the AMES801005CXAA gas furnace. Threaded into the manifold, it precisely meters natural gas into each in-shot burner to deliver the furnace's rated BTU input. A damaged, corroded, or wrongly-drilled orifice throws off the gas/air mixture, causing lazy or sooting flames, incorrect firing rate, and reduced efficiency.
The OEM orifice is drilled to the exact bore size specified for this furnace at its rated input and altitude configuration. Installing an incorrectly sized generic spud over- or under-fires the burners, which is both inefficient and unsafe. Genuine orifices guarantee the correct firing rate straight out of the package. (Note: use natural gas orifices only — do not substitute an LP orifice unless converting the unit with a proper kit.)
Moderate — Shut off gas and power, then unthread the old orifice from the manifold and install the replacement, sealing threads per code. About 15–30 minutes for a matched set. A gas-safety check and combustion verification by an HVAC professional is recommended after any orifice replacement.