{"product_id":"oem-goodman-3-inch-in-shot-burner-for-dms81405dna-b4022700","title":"OEM Goodman 3-Inch In-Shot Burner for DMS81405DNA — B4022700","description":"\u003ch2\u003eGoodman B4022700 3-Inch In-Shot Burner\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eB4022700\u003c\/strong\u003e is a genuine Goodman 3-inch in-shot burner engineered for the \u003cstrong\u003eDMS81405DNA\u003c\/strong\u003e furnace and related Goodman\/Amana gas furnace models. In-shot burners inject a precise air-gas mixture into the heat exchanger tubes, so a clean, correctly-shaped burner is essential for reliable ignition, a stable blue flame, and efficient, complete combustion. Corroded, rusted, or clogged burners cause delayed ignition, roll-out, and rumbling — replacing them restores safe, quiet operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B4022700\u003c\/li\u003e\n\u003cli\u003ePart Type: In-shot burner\u003c\/li\u003e\n\u003cli\u003eLength: 3 inches\u003c\/li\u003e\n\u003cli\u003eMaterial: Corrosion-resistant coated steel\u003c\/li\u003e\n\u003cli\u003eFits: Goodman DMS81405DNA and compatible Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eSold: Individually (replace as a matched set)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B4022700\u003c\/strong\u003e guarantees the exact venturi bore, orifice alignment, and flame-carryover geometry the DMS81405DNA was certified with. Generic burners can alter the air-fuel mixture, producing lazy flames or sooting. OEM is the safe choice for a combustion component.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Requires removing the burner assembly and gas manifold. Replace all burners together, verify orifice seating, and confirm proper flame after reassembly. Shut off gas before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058051072371,"sku":"GOODMAN-9641","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-3-inch-in-shot-burner-for-dms81405dna-b4022700","provider":"National HVAC Parts","version":"1.0","type":"link"}