{"product_id":"oem-goodman-43-burner-orifice-for-gmt140-5d-furnace-b4089343","title":"OEM Goodman #43 Burner Orifice for GMT140-5D Furnace — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 Burner Orifice (#43 drill size)\u003c\/strong\u003e is a genuine OEM brass gas spud that meters the exact fuel flow to each in-shot burner in the \u003cstrong\u003eGoodman GMT140-5D\u003c\/strong\u003e and compatible furnaces. The #43 orifice sizing is calibrated for the furnace's rated input and fuel type — using the correct orifice is essential for safe, efficient combustion and proper flame appearance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Type: Burner orifice \/ gas spud\u003c\/li\u003e\n\u003cli\u003eDrill Size: #43\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003eMaterial: Brass\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003cli\u003ePrimary Fit: GMT140-5D\u003c\/li\u003e\n\u003cli\u003eSold: Individually (per orifice)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM orifice\u003c\/strong\u003e guarantees the precise bore diameter and thread pitch for correct gas metering. An incorrectly sized generic spud over- or under-fires the burner, causing sooting, poor efficiency, or unsafe combustion. Always confirm the orifice size matches your furnace's rating plate and fuel type.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e 15–25 minutes with a nut driver or spud wrench. Shut off gas and power, replace orifices as a matched set, and verify no leaks with soap solution before relighting.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058164941171,"sku":"GOODMAN-12504","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmt140-5d-furnace-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}