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The Goodman 10716003 is a genuine natural gas burner orifice (spud) for GMT115-5 series furnaces. This small brass fitting meters the exact gas flow into each burner — a clogged, corroded, or wrong-size orifice causes lazy yellow flames, sooting, delayed ignition, or a furnace that short-cycles on the limit. Replacing it restores a clean, efficient blue flame.
Orifice sizing is safety-critical: the drill diameter is matched to the furnace's BTU input and gas type. Our genuine Goodman orifice guarantees the correct bore, so combustion stays within spec. Generic or hand-drilled substitutes risk over- or under-firing, which wastes fuel, produces carbon monoxide, or damages the heat exchanger. Never guess on an orifice.
Easy — about 15–20 minutes. Shut off the gas supply, remove the burner assembly, back out the old spud with a nut driver, and thread in the exact-match replacement. Confirm no gas leaks with soap solution and verify a clean flame after relighting. If you are unsure about gas-side work, use a licensed technician.
Genuine part, fast shipping, from NationalHVACParts.com.