{"product_id":"oem-goodman-45-burner-orifice-for-gmpn120-5-furnace-b2589345","title":"OEM Goodman #45 Burner Orifice for GMPN120-5 Furnace — B2589345","description":"\u003ch2\u003eGoodman B2589345 #45 Burner Orifice\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB2589345\u003c\/strong\u003e is a genuine OEM burner orifice (gas spud) drilled to \u003cstrong\u003e#45 drill size\u003c\/strong\u003e for the \u003cstrong\u003eGMPN120-5\u003c\/strong\u003e gas furnace. The orifice is the precisely metered brass jet that meters natural gas into each burner tube. The #45 bore sets the exact BTU input per burner — even a small deviation changes the gas\/air mixture and flame quality. This factory spud is drilled to Goodman's specification for correct, safe combustion.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B2589345\u003c\/li\u003e\n\u003cli\u003eOrifice Drill Size: #45\u003c\/li\u003e\n\u003cli\u003eGas Type: Natural gas\u003c\/li\u003e\n\u003cli\u003eCompatibility: Goodman GMPN120-5 gas furnace\u003c\/li\u003e\n\u003cli\u003eFunction: Meters gas flow into the burner\u003c\/li\u003e\n\u003cli\u003eMaterial: Machined brass spud\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOrifice bore is a safety-critical dimension. OEM guarantees the exact #45 drilling and thread. Generic spuds may be mis-drilled or mislabeled, producing sooting, incomplete combustion, or excess CO. Always use the correct OEM orifice for your gas type and model.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy–Moderate (2\/5).\u003c\/strong\u003e Shut off gas, remove the burner, and thread out the old orifice with a nut driver. Hand-tighten the replacement to spec and leak-test. Order the matching quantity for a full six-burner set.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058150523251,"sku":"GOODMAN-12112","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-45-burner-orifice-for-gmpn120-5-furnace-b2589345","provider":"National HVAC Parts","version":"1.0","type":"link"}