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The Goodman B2589342 Burner Orifice (#42) is the genuine OEM gas spud that meters fuel into the burners of GSMS060-3 gas furnaces and compatible Goodman/Amana models. The precise #42 drill size sets the correct gas flow for a stable, blue, efficient flame — the wrong orifice size causes sooting, delayed ignition, or under-firing.
Orifice sizing is critical to safe combustion. The genuine OEM B2589342 is machined to exact #42 tolerances and thread pitch. Generic spuds vary in bore diameter and can shift the gas input outside spec, risking incomplete combustion and carbon monoxide. Always match OEM sizing.
Moderate (2/5). Shut off gas and power, remove the manifold or back out the old spud with a nut driver, and thread in the replacement snug — do not over-torque. Leak-test the joint before relighting. Professional installation recommended.