{"product_id":"oem-goodman-43-burner-orifice-for-ams81155cxa-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for AMS81155CXA Furnace — B4089343","description":"\u003ch2\u003eGoodman B4089343 Burner Orifice (#43)\u003c\/h2\u003e\u003cp\u003eThe Goodman B4089343 is a genuine OEM burner orifice (spud) drilled to the #43 size for the AMS81155CXA gas furnace and compatible AMS8 series units. The orifice meters the exact volume of gas delivered to each in-shot burner, setting the furnace's BTU input and flame characteristics. A worn, corroded, or incorrectly sized orifice causes over- or under-firing, poor efficiency, and flame problems.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B4089343\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrifice Size:\u003c\/strong\u003e #43 drill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Model:\u003c\/strong\u003e AMS81155CXA (and related AMS8 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural gas (size-specific)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Machined brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Direct OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOrifice sizing is safety-critical. Genuine OEM orifices are precision-drilled and gauge-verified to the exact #43 bore, guaranteeing correct gas flow and a properly rated flame. Generic or mis-sized orifices can cause dangerous over-firing, sooting, or carbon monoxide production. Never substitute an unverified orifice size.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (3\/5).\u003c\/strong\u003e Threads into the manifold and must be leak-checked and flame-verified after install. As a gas metering component, professional installation by a licensed technician is strongly recommended.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057716052339,"sku":"GOODMAN-7192","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-ams81155cxa-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}