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The Goodman B2589343 is a genuine OEM natural gas burner orifice sized specifically for the Goodman GDT115-5 gas furnace. The orifice meters gas flow to each burner, so an eroded, clogged, or incorrectly drilled orifice can cause yellow flames, sooting, delayed ignition, or reduced heat output. This factory part is precision-machined to the exact orifice diameter Goodman specifies for proper input rating and safe, efficient combustion.
Orifice sizing is safety-critical: an over- or under-sized bore changes the BTU input and flame quality. Generic or shop-drilled orifices risk incorrect firing rates. This genuine Goodman OEM orifice guarantees the factory-specified drill size for correct input and clean flame color.
Moderate — best for experienced DIYers or a pro (30–45 min). Requires shutting off gas and power, removing the burner assembly, and swapping the orifice with the correct wrench. Verify natural-gas (not LP) application and check flame appearance after startup.