{"product_id":"oem-goodman-43-burner-orifice-for-gmt045-3b-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for GMT045-3B Furnace — B4089343","description":"\u003ch2\u003eGoodman B4089343 #43 Burner Orifice\u003c\/h2\u003e\u003cp\u003eThe Goodman B4089343 is a genuine OEM #43 burner orifice (spud) engineered for the Goodman GMT045-3B gas furnace and compatible multi-position models. This precision-drilled brass orifice meters the exact volume of gas delivered to each burner, ensuring a clean, efficient blue flame and safe combustion. A worn, corroded, or incorrectly sized orifice causes lazy yellow flames, sooting, delayed ignition, and reduced heating output — replacing it restores rated BTU performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B4089343\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrifice Size:\u003c\/strong\u003e #43 drill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Machined brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMT045-3B and compatible furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural gas (verify for LP conversions)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e Standard Goodman burner manifold\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine OEM B4089343 is drilled to Goodman's exact specification and pressure-tested for correct gas metering. Generic orifices are often off by a drill size or two, which throws off the gas\/air mixture and can trip flame-sensor faults. For a combustion component, we recommend OEM to keep your furnace within safe, factory-rated tolerances.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e A qualified HVAC technician can swap the orifice in minutes with a nut driver after shutting off the gas supply. Always verify manifold pressure after installation.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058156061043,"sku":"GOODMAN-12285","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmt045-3b-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}