{"product_id":"oem-goodman-43-burner-orifice-for-amv80704bxbb-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for AMV80704BXBB Furnace — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 Burner Orifice (#43 drill size)\u003c\/strong\u003e is a genuine OEM gas metering orifice for \u003cstrong\u003eGoodman and Amana AMV80704BXBB\u003c\/strong\u003e furnaces. The orifice threads into the manifold and precisely meters the volume of gas fired into each in-shot burner. Because BTU output is set by orifice bore, using the correct #43 size is essential for safe, in-spec combustion and proper flame appearance.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: B4089343\u003c\/li\u003e\n\u003cli\u003eOrifice drill size: #43\u003c\/li\u003e\n\u003cli\u003eType: Brass natural gas burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMV80704BXBB furnace manifold\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\n\u003cp\u003eThe OEM B4089343 is drilled and gauged to Goodman's exact #43 bore, guaranteeing the rated gas flow. An incorrectly sized or loosely toleranced generic orifice can over- or under-fire the furnace, producing lazy yellow flames, sooting, or high-limit trips. Orifices are a safety-critical metering part — always match OEM bore.\u003c\/p\u003e\n\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\n\u003cp\u003eShut off gas, back out the old orifice with a nut driver, thread in the replacement, and leak-check. About 15–20 minutes. Confirm the size stamp matches the furnace rating plate before firing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057807704435,"sku":"GOODMAN-7636","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-amv80704bxbb-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}