{"product_id":"oem-goodman-43-burner-orifice-for-gmth090-5-b4089343","title":"OEM Goodman #43 Burner Orifice for GMTH090-5 — B4089343","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B4089343 #43 Burner Orifice\u003c\/strong\u003e is a genuine OEM gas metering spud for the \u003cstrong\u003eGMTH090-5\u003c\/strong\u003e furnace. Threaded into the manifold, this orifice meters the precise volume of natural gas fed to each in-shot burner. The #43 drill size sets the BTU input, so installing the correct factory orifice is essential for safe combustion, proper flame color, and rated efficiency on the GMTH090-5.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: B4089343\u003c\/li\u003e\n\u003cli\u003eDrill size: #43\u003c\/li\u003e\n\u003cli\u003eType: Threaded burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (OEM)\u003c\/li\u003e\n\u003cli\u003eApplication: GMTH090-5 gas furnace\u003c\/li\u003e\n\u003cli\u003eFuel: Natural gas\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe #43 bore matches the GMTH090-5's rated input and manifold pressure. A generic or incorrectly drilled orifice can over-fire or starve the burners, leading to sooting, rollout, or a lazy yellow flame. The genuine Goodman orifice delivers the exact metering the appliance was certified with.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Easy (DIY-friendly).\u003c\/strong\u003e Turn off gas and power, unthread the old orifice from the manifold with a socket, and hand-start the replacement before snugging it — brass spuds crack if over-torqued. Verify a crisp blue flame after restart. About a 15-minute job. Inspect neighboring orifices while you're in there.\u003c\/p\u003e\u003cp\u003eGenuine Goodman quality for dependable winter heating.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058166514035,"sku":"GOODMAN-12563","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmth090-5-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}