{"product_id":"oem-goodman-43-burner-orifice-for-amv80703bxa-b4089343","title":"OEM Goodman #43 Burner Orifice for AMV80703BXA — B4089343","description":"\u003ch2\u003eGoodman B4089343 #43 Burner Orifice\u003c\/h2\u003e\u003cp\u003eThe B4089343 is a genuine Goodman\/Amana natural-gas burner orifice (spud) engineered for the \u003cstrong\u003eAMV80703BXA\u003c\/strong\u003e 80% AFUE upflow\/horizontal gas furnace and other compatible multi-position models. The #43 drill-size bore precisely meters the gas flow to each burner, ensuring a clean, stable flame, correct BTU input, and safe, efficient combustion. Using the factory orifice size is critical — an incorrect bore can cause sooting, delayed ignition, or an over\/under-fired heat exchanger.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003eOrifice Size: #43 drill (natural gas)\u003c\/li\u003e\n\u003cli\u003eThread: standard Goodman\/Amana burner spud thread\u003c\/li\u003e\n\u003cli\u003eMaterial: machined brass\u003c\/li\u003e\n\u003cli\u003eFuel: Natural Gas\u003c\/li\u003e\n\u003cli\u003eFits: AMV80703BXA and related 80% AFUE Goodman\/Amana furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur \u003cstrong\u003eOEM B4089343\u003c\/strong\u003e is the exact factory spud with a certified bore diameter and thread pitch, so gas input matches the furnace rating plate out of the box. Generic orifices vary in bore tolerance and thread finish, risking improper firing and nuisance lockouts. For a safety-critical gas component, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate\u003c\/strong\u003e — requires shutting off gas, removing the burner assembly, and swapping the orifice with a nut driver, then leak-checking. Gas work should be performed by a qualified HVAC technician. Always verify manifold pressure after replacement.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057802887539,"sku":"GOODMAN-B4089343","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-amv80703bxa-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}