{"product_id":"oem-goodman-43-burner-orifice-for-gmnt045-3b-b4089343","title":"OEM Goodman #43 Burner Orifice for GMNT045-3B — B4089343","description":"\u003ch2\u003eGoodman B4089343 Burner Orifice (#43 Drill Size)\u003c\/h2\u003e\u003cp\u003eThe Goodman B4089343 is a genuine OEM brass burner orifice (spud) sized to a \u003cstrong\u003e#43 drill\u003c\/strong\u003e bore, designed for the \u003cstrong\u003eGMNT045-3B\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. The orifice meters the precise volume of gas delivered to each in-shot burner. An orifice that is worn, enlarged by cleaning, or the wrong drill size will disrupt the air-fuel ratio and produce sooting, poor flame, or reduced heating capacity.\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\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003cli\u003eFuel: Natural gas\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMNT045-3B and compatible models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman B4089343\u003c\/strong\u003e is drilled and gauged to factory tolerance, which is critical because even a fraction of a drill size changes the BTU input. Generic or field-drilled orifices risk over- or under-firing the furnace. We recommend OEM to keep the appliance within its rated, certified input.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eTurn off gas and power, remove the burner to access the manifold, unscrew the old orifice, and thread in the new one snugly—do not overtighten brass into aluminum. Match the drill number stamped on the orifice to your gas type before firing. Leak-check the manifold connection after reassembly.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eConfirm your fuel type and model number before ordering; LP conversions use a different orifice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058128109939,"sku":"GOODMAN-11631","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmnt045-3b-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}