{"product_id":"oem-goodman-43-burner-orifice-for-gmp100-4-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for GMP100-4 Furnace — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 Burner Orifice\u003c\/strong\u003e is a genuine OEM #43-drilled gas spud for the Goodman \u003cstrong\u003eGMP100-4\u003c\/strong\u003e gas furnace. The orifice meters the exact flow of natural gas into each burner, setting the furnace's BTU input and flame quality. A worn, corroded, or incorrectly drilled orifice causes poor combustion, sooting, delayed ignition, or lockouts — so using the factory-specified #43 orifice is essential for safe, efficient heating.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrifice Size:\u003c\/strong\u003e #43 drill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Natural gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e Standard Goodman burner spud thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B4089343\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMP100-4 furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eA gas orifice is a safety-critical, precisely drilled component. This \u003cstrong\u003egenuine OEM Goodman orifice\u003c\/strong\u003e is machined and gauged to Goodman's exact bore diameter, ensuring correct gas input and flame characteristics. Generic orifices sometimes vary in bore size or thread pitch, which can over- or under-fire the furnace. For any gas-carrying part, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty: Moderate\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003eModerate (3\/5)\u003c\/strong\u003e. Replacement requires shutting off the gas supply, removing the burner assembly, and swapping the spud with a nut driver. Because this involves the gas train, combustion, and re-lighting, we recommend a \u003cstrong\u003elicensed HVAC or gas technician\u003c\/strong\u003e perform the work and verify manifold pressure and flame after installation. Confirm the correct orifice for your altitude and fuel type before installing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058136629619,"sku":"GOODMAN-11881","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmp100-4-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}