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The Goodman B2589345 #45 Burner Orifice is a genuine OEM gas spud for the Goodman GSU060-3 gas furnace. The orifice meters the exact gas flow to each burner, and its #45 drill size sets the correct BTU input for the furnace's rated capacity. Worn, damaged, or incorrectly sized orifices cause improper flame, sooting, or reduced heat output — using the factory-specified size is essential for safe, efficient combustion.
Orifice sizing is safety-critical — the wrong bore changes the gas input and flame characteristics. The Goodman OEM orifice guarantees the precise #45 opening the furnace was certified with. Generic orifices vary in machining tolerance and thread fit; for a combustion component, OEM is the safe choice.
Moderate (3/5). Requires shutting off the gas supply and power, removing the manifold or burner, and threading in the correct orifice. Confirm your gas type (this is a natural-gas spud) and BTU rating before installing. Combustion work is best verified by a licensed HVAC technician.