{"product_id":"oem-goodman-43-burner-orifice-for-gmt115-5b-b4089343","title":"OEM Goodman #43 Burner Orifice for GMT115-5B — B4089343","description":"\u003ch2\u003eGoodman B4089343 #43 Burner Orifice (Spud)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343\u003c\/strong\u003e is a genuine OEM burner orifice — a precision-drilled brass gas spud sized at \u003cstrong\u003e#43 drill\u003c\/strong\u003e — for the \u003cstrong\u003eGMT115-5B\u003c\/strong\u003e furnace. The orifice meters the exact volume of natural gas into each in-shot burner, setting the furnace's BTU input and flame quality. Using the wrong orifice size causes over- or under-firing, sooting, poor flame, or nuisance limit trips. Damaged, corroded, or debris-clogged orifices should be replaced to restore proper firing rate.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Threaded burner orifice \/ gas spud\u003c\/li\u003e\n\u003cli\u003eDrill Size: #43\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003cli\u003eGas Type: Natural gas (verify against your rating plate)\u003c\/li\u003e\n\u003cli\u003eSold as: Individual orifice (order one per burner)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT115-5B and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B4089343\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (genuine OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eGenuine Goodman orifices are drilled to a certified tolerance and threaded to seal correctly in the manifold. Generic orifices may vary in bore size or thread pitch, throwing off the firing rate and risking gas leaks. For a component that governs combustion input, always use the exact OEM part and drill size specified for your unit.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Shut off the gas, remove the burner, and thread the orifice into the manifold; leak-check the joint afterward. Roughly 10–20 minutes. Confirm the #43 size matches your furnace rating plate and gas type before installing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058161795443,"sku":"GOODMAN-12448","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmt115-5b-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}