{"product_id":"oem-goodman-43-burner-orifice-for-ams81405dxa-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for AMS81405DXA Furnace — B4089343","description":"\u003ch2\u003eGoodman B4089343 Burner Orifice (#43 Drill Size)\u003c\/h2\u003e\u003cp\u003eThe B4089343 is a genuine OEM burner orifice (spud) drilled to the #43 size for Goodman and Amana gas furnaces, including the \u003cstrong\u003eAMS81405DXA\u003c\/strong\u003e. The orifice meters the precise volume of gas delivered to each in-shot burner, setting the input rate and flame quality. Using the correct drill-size orifice is essential for proper BTU input, clean combustion, and safe operation — the wrong size causes over- or under-firing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eDrill size: #43\u003c\/li\u003e\n\u003cli\u003eFit: Direct OEM replacement — threads into the factory manifold\u003c\/li\u003e\n\u003cli\u003eCompatible model: AMS81405DXA and related Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace (natural gas — verify orifice size for your fuel and altitude)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman B4089343\u003c\/strong\u003e guarantees the exact #43 bore and thread pitch specified for this furnace's manifold and burner set. Generic orifices can vary in bore tolerance, altering the input rate. For correct, code-compliant gas metering, use the OEM part and confirm the orifice size against your furnace rating plate.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (3\/5).\u003c\/strong\u003e The orifice threads out with a nut driver, but the manifold must be accessible and the correct size confirmed for your fuel type and elevation. Shut off gas and power; leak-test the manifold after service. Best performed by an HVAC technician. About 20–30 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057733681523,"sku":"GOODMAN-7284","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-ams81405dxa-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}