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This genuine OEM Goodman 10716003 natural gas burner orifice (spud) meters the precise volume of fuel into each burner on the GKS90453BXAD gas furnace. The drilled bore is sized to deliver the furnace's rated BTU input on natural gas — even a slightly wrong orifice changes the flame characteristic, causing sooting, delayed ignition, incomplete combustion, or an over/under-fired heat exchanger. Replace a damaged, corroded, or previously LP-converted orifice with the correct factory spud to keep combustion clean and safe.
The OEM orifice is drilled and gauged to Goodman's exact specification for this model and altitude rating. Generic or mis-drilled orifices are a combustion-safety hazard — flame impingement and CO production can result. Always use the OEM orifice matched to your fuel type.
Moderate (3/5). Shut off gas and power, remove the manifold or burner assembly, unthread the old orifice, and torque in the new spud without cross-threading. Verify flame appearance and, ideally, combustion analysis after install. Professional installation recommended.