{"product_id":"oem-goodman-43-burner-orifice-for-amv81155cxa-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for AMV81155CXA Furnace — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 #43 Burner Orifice\u003c\/strong\u003e is a genuine OEM brass gas spud for the \u003cstrong\u003eAMV81155CXA\u003c\/strong\u003e furnace. The orifice meters the exact volume of gas fed to each in-shot burner, and its drill size (#43) is calibrated to the furnace's rated BTU input on natural gas. A worn, enlarged, or debris-clogged orifice throws off the fuel-air ratio, causing improper firing, sooting, or reduced heating capacity. Installing the correct OEM orifice restores factory-rated combustion.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003ePart Type: Burner Orifice \/ Gas Spud\u003c\/li\u003e\n\u003cli\u003eDrill Size: #43\u003c\/li\u003e\n\u003cli\u003eFuel: Natural Gas\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003cli\u003eCompatible Model: AMV81155CXA (Goodman\/Amana two-stage furnace)\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOrifice sizing is exact — even a fraction of a drill size changes the gas flow and BTU output. OEM orifices are precision-drilled to Goodman's spec for this model and gas type. Generic or hand-drilled orifices risk over- or under-firing the furnace. Always use the correct OEM drill size for safe, code-compliant operation.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (3\/5).\u003c\/strong\u003e Threads into the manifold with a nut driver or socket; verify no gas leaks with a leak-detection solution after install. Confirm gas type matches your supply. Shut off gas and power before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057814290803,"sku":"GOODMAN-7683","price":16.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-amv81155cxa-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}