{"product_id":"oem-goodman-43-burner-orifice-for-ams80703ana-b4089343","title":"OEM Goodman #43 Burner Orifice for AMS80703ANA — B4089343","description":"\u003ch2\u003eGoodman B4089343 Burner Orifice #43\u003c\/h2\u003e\u003cp\u003eThe Goodman B4089343 is a genuine OEM #43 drill-size burner orifice (spud) for \u003cstrong\u003eGoodman and Amana AMS80703ANA\u003c\/strong\u003e gas furnaces. The orifice meters the exact gas flow into each in-shot burner, setting the furnace's BTU input. A worn, corroded, or wrong-size orifice throws off the air\/fuel ratio, causing sooting, lazy yellow flames, or reduced heat output. This factory-drilled orifice restores clean, correctly rated combustion.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003eType: Burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eDrill Size: #43\u003c\/li\u003e\n\u003cli\u003eFuel: Natural gas (verify against furnace rating plate)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMS80703ANA furnaces\u003c\/li\u003e\n\u003cli\u003eSold individually — one per burner\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eGenuine Goodman orifices are precision-drilled and gauged to the exact #43 bore. Aftermarket orifices vary in bore tolerance and thread pitch, and even a slightly off diameter changes BTU input and combustion quality. OEM ensures safe, code-correct firing.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Threads into the manifold — remove the old orifice with a nut driver and hand-start the new one. Shut off gas and power; always match orifice drill size to your fuel type and altitude.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057689739635,"sku":"GOODMAN-6872","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-ams80703ana-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}