{"product_id":"oem-goodman-43-burner-orifice-for-amv80905cxa-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for AMV80905CXA Furnace — B4089343","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB4089343 Burner Orifice (#43 drill size)\u003c\/strong\u003e is a genuine OEM natural-gas orifice for the \u003cstrong\u003eAMV80905CXA\u003c\/strong\u003e gas furnace. The orifice (spud) meters the precise gas flow into each in-shot burner, setting the BTU input and flame characteristics. An orifice that is worn, corroded, partially clogged, or the wrong drill size will throw off the fuel\/air ratio — causing lazy or lifting flames, sooting, or incorrect firing rate. The correctly sized OEM orifice restores accurate gas metering and proper combustion.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: B4089343\u003c\/li\u003e\n\u003cli\u003eType: Burner Orifice \/ Spud\u003c\/li\u003e\n\u003cli\u003eDrill Size: #43\u003c\/li\u003e\n\u003cli\u003eCategory: Furnace Burner Component\u003c\/li\u003e\n\u003cli\u003eCompatible Model: AMV80905CXA (Goodman\/Amana 80% gas furnace)\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003cli\u003eFit: Direct OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOrifice sizing is safety-critical — even a small bore variance changes the firing rate. Genuine Goodman #43 orifices are precision-drilled to spec, while generic spuds may vary in bore diameter or thread fit. Always match the exact drill size and fuel type (NG vs LP); OEM guarantees the correct rating.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (3\/5).\u003c\/strong\u003e Threads into the manifold in place of the old orifice. Shut off gas and power, verify the correct fuel type and drill number, and check manifold pressure and flame after installation. Recommended for a qualified HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057809310067,"sku":"GOODMAN-7648","price":14.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-amv80905cxa-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}