{"product_id":"oem-goodman-43-burner-orifice-for-gmth045-3a-b4089343","title":"OEM Goodman #43 Burner Orifice for GMTH045-3A — B4089343","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB4089343\u003c\/strong\u003e is a genuine \u003cstrong\u003e#43 burner orifice\u003c\/strong\u003e (gas jet) for the \u003cstrong\u003eGMTH045-3A\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. This precision-drilled brass orifice meters the exact gas flow to each in-shot burner, setting the furnace's rated BTU input. The #43 drill size is factory-matched to the furnace's natural-gas firing rate — using the wrong size causes over- or under-firing, sooting, or safety lockouts.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: B4089343\u003c\/li\u003e\n\u003cli\u003eType: Burner orifice \/ spud\u003c\/li\u003e\n\u003cli\u003eDrill size: #43\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMTH045-3A gas furnace\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass\u003c\/li\u003e\n\u003cli\u003eThread: Standard Goodman burner spud thread\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOEM Goodman orifices are drilled and gauged to tight tolerances so every burner fires at the certified rate. Generic or re-drilled orifices can vary by several thousandths of an inch — enough to shift flame color, efficiency, and CO output. For a gas metering part, OEM precision is the safe choice.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty: Easy to Moderate\u003c\/h3\u003e\u003cp\u003eShut off gas and power, then thread the orifice into the manifold or burner spud and torque snug (do not overtighten). Confirm you're matching natural gas vs. LP requirements. A leak check with soap solution is required after install.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eCompatible with GMTH045-3A. Confirm #43 size and fuel type before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058165367155,"sku":"GOODMAN-12521","price":5.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-43-burner-orifice-for-gmth045-3a-b4089343","provider":"National HVAC Parts","version":"1.0","type":"link"}