{"product_id":"oem-goodman-43-burner-orifice-for-gmth115-5-natural-gas-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for GMTH115-5 Natural Gas Furnace — B4089343","description":"\u003ch2\u003eGoodman B4089343 #43 Burner Orifice\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB4089343\u003c\/strong\u003e is a genuine OEM burner orifice (gas spud) drilled to \u003cstrong\u003e#43\u003c\/strong\u003e size for the \u003cstrong\u003eGMTH115-5\u003c\/strong\u003e natural gas furnace and compatible Goodman\/Amana burner assemblies. The orifice meters the exact gas flow into each in-shot burner, setting the input rate (BTU) and flame quality. A worn, enlarged, or wrong-size orifice causes sooting, poor flames, or improper firing rate — this OEM spud restores the factory-specified metering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Threaded burner orifice \/ gas spud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrifice Drill Size:\u003c\/strong\u003e #43\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B4089343\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e GMTH115-5 (and compatible in-shot burner racks)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural gas (verify size against rating plate \/ altitude)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOEM orifices are precision-drilled and pressure-verified to the exact #43 bore and thread pitch. Generic orifices can vary slightly in bore diameter, which directly changes BTU input and combustion safety. For any gas-metering component, OEM is the correct and safest choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Threads into the manifold behind each burner; verify orifice size matches the furnace rating plate and local altitude before firing. \u003cstrong\u003eGas work — shut off gas and power; use a licensed technician if unsure.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058167431539,"sku":"GOODMAN-12598","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmth115-5-natural-gas-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}