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The Goodman 10716003 is a genuine OEM natural gas burner orifice (spud) for the WGGE4542A115MAA gas furnace and compatible Goodman/Amana models. The orifice is the precision-drilled brass nozzle that meters the exact volume of natural gas delivered to each burner, setting the input rate and the air/fuel mixture. A damaged, corroded, or incorrectly drilled orifice throws off the firing rate, causing poor combustion, sooting, delayed ignition, or low heat output. Orifices are also gas-type specific — this part is drilled for natural gas and must not be used with LP/propane.
OEM vs. Generic: The OEM 10716003 is drilled to Goodman's exact orifice size for this furnace's rated input at standard manifold pressure. Generic orifices that are close but not identical in drill size alter the BTU input and combustion quality. For safe, in-spec firing, always match the factory orifice size and gas type.
Install difficulty: Moderate (3/5) — gas connection. Roughly 20–30 minutes. Shut off gas and power, remove the manifold or burner assembly as required, thread out the old orifice, and install the new one to the correct depth without over-tightening (the brass is soft). Leak-check every joint with soap solution before returning the furnace to service.
Safety note: Gas work should be performed by a qualified technician. Verify the orifice size stamped on your original part before ordering, or email info@nationalhvacparts.com with your model and serial.