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The Goodman 10716003 Natural Gas Orifice is a genuine OEM burner spud for the WFD18090S4BXCC furnace. The orifice meters the precise volume of natural gas fed to each burner, setting the flame size and the furnace's rated BTU input. A worn, corroded, or incorrectly drilled orifice throws off the air-fuel mixture, causing yellow flames, sooting, delayed ignition, or short-cycling on flame sense.
The genuine Goodman OEM 10716003 is machine-drilled to the exact bore diameter for this furnace's input rating and manifold pressure. Generic orifices with an approximate drill size over- or under-fire the burners, hurting efficiency and combustion safety. For anything touching the gas train, use OEM.
Moderate (2/5). Shut off the gas supply, remove the manifold or unthread the orifice from the manifold pipe, thread in the replacement, and leak-check every joint with soap solution before relighting. Twenty to thirty minutes. A combustion analyzer check afterward is strongly recommended.
Confirm fuel type and model before ordering. Contact info@nationalhvacparts.com for help.