{"product_id":"oem-goodman-43-burner-orifice-for-gmnt140-5b-b4089343","title":"OEM Goodman #43 Burner Orifice for GMNT140-5B — B4089343","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB4089343\u003c\/strong\u003e is a genuine OEM #43 burner orifice (spud) designed for the GMNT140-5B gas furnace. The orifice precisely meters gas flow into each in-shot burner, setting the correct air-fuel mixture for clean, efficient combustion. The #43 drill size is calibrated to the furnace's rated input BTU and gas type.\u003c\/p\u003e\u003cp\u003eA worn, enlarged, or incorrectly sized orifice can cause a lazy yellow flame, sooting, incomplete combustion, or under\/over-firing. Using the factory-specified orifice size is critical to safe operation and rated efficiency.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eDrill size: #43\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMNT140-5B and compatible furnace models\u003c\/li\u003e\n\u003cli\u003eFuel: Sized for natural gas (LP conversion requires the correct LP orifice)\u003c\/li\u003e\n\u003cli\u003eThread: Standard Goodman manifold thread\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eGenuine OEM orifices are drilled and gauged to exact factory diameters, ensuring correct gas metering and manifold pressure. Generic orifices may have inconsistent bore sizes that shift the firing rate and combustion quality. Because orifice sizing directly affects combustion safety, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy.\u003c\/strong\u003e Threads into the gas manifold with a wrench after gas and power are shut off. Manifold pressure and flame should be verified afterward. Gas-metering components should be installed and checked by a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058132992371,"sku":"GOODMAN-11786","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmnt140-5b-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}