{"product_id":"oem-goodman-43-burner-orifice-for-gmt140-5bb-b4089343","title":"OEM Goodman #43 Burner Orifice for GMT140-5BB — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 #43 Burner Orifice\u003c\/strong\u003e (spud) is a genuine OEM metering fitting for the \u003cstrong\u003eGMT140-5BB\u003c\/strong\u003e gas furnace. The orifice threads into the manifold and precisely meters gas flow into each in-shot burner. The \u003cstrong\u003e#43 drill size\u003c\/strong\u003e sets the correct BTU input for the furnace's rated altitude and fuel type. A damaged, corroded, or wrong-size orifice causes under- or over-firing, poor flame quality, and efficiency loss.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eDrill size: #43\u003c\/li\u003e\n\u003cli\u003eOEM part number: B4089343\u003c\/li\u003e\n\u003cli\u003eFunction: Meters gas flow to in-shot burner\u003c\/li\u003e\n\u003cli\u003eFits: Goodman \/ Amana GMT140-5BB furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B4089343\u003c\/strong\u003e is precision-drilled and thread-matched to the Goodman manifold. Using an incorrect drill size or a loosely toleranced generic spud changes the firing rate and can create unsafe combustion. Always match the exact orifice size specified on the furnace rating plate; the genuine part guarantees it.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy.\u003c\/strong\u003e Shut off gas and power, unthread the old orifice from the manifold, and hand-thread the new one snug (do not overtighten). Roughly 10–15 minutes. Leak-check the manifold connection after install and confirm proper flame before returning to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058164646259,"sku":"GOODMAN-12493","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmt140-5bb-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}