{"product_id":"oem-goodman-43-burner-orifice-for-ams80704bxa-b4089343","title":"OEM Goodman #43 Burner Orifice for AMS80704BXA — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 Burner Orifice\u003c\/strong\u003e is a genuine OEM #43 drill-size brass orifice (spud) for the \u003cstrong\u003eAMS80704BXA\u003c\/strong\u003e and compatible Goodman\/Amana gas furnaces. The orifice threads into the manifold and meters the precise amount of gas delivered to each in-shot burner, setting the furnace's BTU input and flame characteristics.\u003c\/p\u003e\u003cp\u003eAn orifice with the wrong bore size — or one that has been enlarged by cleaning or corrosion — will over- or under-fire the furnace, producing sooty flames, poor efficiency, or nuisance safety lockouts. Matching the factory #43 drill size keeps combustion within spec.\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 \/ manifold 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: AMS80704BXA\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\u003eOrifice sizing is exact and combustion-critical. Genuine OEM spuds are machined to the precise #43 bore Goodman specifies for this furnace's manifold pressure. Generic or hand-drilled orifices risk incorrect gas flow, which affects safety and efficiency. Always use the OEM-specified size.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Shut off gas and power, remove the burner assembly to access the manifold, and thread out the old orifice with a properly sized socket or wrench — avoid deforming the brass. Install the correct #43 orifice, reassemble, and confirm a clean blue flame after relighting. Recommended for experienced DIYers or a licensed technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057691574643,"sku":"GOODMAN-6937","price":6.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-ams80704bxa-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}