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The Goodman B2589343 Natural Gas Burner Orifice (spud) is a genuine OEM metering component for the GDS80453AXA gas furnace and compatible Goodman/Amana models. Threaded into the manifold, the orifice precisely regulates the volume of natural gas delivered to each burner, setting the correct BTU input and ensuring a clean, efficient flame. A worn, corroded, or incorrectly drilled orifice causes lazy yellow flames, sooting, and unsafe combustion.
OEM orifices are drilled to Goodman's exact specification for this model's manifold pressure and altitude rating — critical for safe, code-compliant combustion. Generic or mismatched drill sizes can over- or under-fire the furnace, risking heat-exchanger damage or carbon monoxide production. Never guess on a gas orifice; match the OEM part.
Moderate (2/5) — gas work. Shut off the gas supply, drop the manifold, and thread out the old orifice with a nut driver. Install the new spud, reassemble, and leak-check with soap solution before relighting. If you are not comfortable working with gas piping, use a licensed technician.