{"product_id":"oem-goodman-43-burner-orifice-for-ams80904bxa-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for AMS80904BXA Furnace — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 #43 Burner Orifice\u003c\/strong\u003e is a genuine OEM gas metering spud for the \u003cstrong\u003eAMS80904BXA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. The orifice threads into the manifold and meters the precise gas flow into each in-shot burner, setting the furnace's firing rate. The #43 drill size is factory-matched to the unit's rated BTU input on natural gas.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComponent: Threaded 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: AMS80904BXA and select Goodman\/Amana gas furnaces\u003c\/li\u003e\n\u003cli\u003eFunction: Meters gas flow to the burner (firing rate)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOrifice sizing directly controls BTU input and combustion safety, so an exact-size OEM spud is essential. A generic or wrong-size orifice can over- or under-fire the furnace, causing sooting, high CO, or poor heating. Always confirm fuel type (NG vs. LP) before ordering — LP requires a different orifice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (3\/5).\u003c\/strong\u003e Requires shutting off gas, removing the manifold, and threading in the new orifice with proper sealant. Verify firing rate and check for leaks after install. Recommended for experienced DIYers or a licensed technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057706254707,"sku":"GOODMAN-7084","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-ams80904bxa-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}