{"product_id":"oem-goodman-view-port-sight-glass-bushing-for-gmv80704bxba-b1392139","title":"OEM Goodman View Port Sight Glass Bushing for GMV80704BXBA — B1392139","description":"\u003ch2\u003eGoodman B1392139 View Port Bushing\u003c\/h2\u003e\u003cp\u003eThe B1392139 is the genuine OEM view port bushing for the Goodman GMV80704BXBA 80% two-stage gas furnace. This bushing snaps into the burner\/combustion access panel and holds the sight-glass view port that lets a technician observe the flame during a heating cycle. It also seals the opening so the burner compartment maintains proper draft and combustion air. A cracked, brittle, or missing bushing can let the view port fall out and disturb combustion airflow, so it's worth replacing whenever it shows age.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1392139\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e View port bushing \/ sight-glass grommet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e Goodman GMV80704BXBA (and compatible GMV80 series panels)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-temperature molded polymer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Burner compartment flame-observation port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e 80% AFUE gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis bushing is molded to the exact panel cutout diameter and temperature rating for the GMV80 burner box. Generic grommets often don't survive the sustained heat near the burner and can shrink or crack. The OEM B1392139 is the low-cost, correct-fit choice for a small but functional sealing part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eVery Easy (1\/5).\u003c\/strong\u003e Push out the old bushing and press the new one into the panel opening by hand — no tools required. Under 10 minutes. Power the furnace off before opening the burner compartment.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058168971635,"sku":"GOODMAN-12638","price":6.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-view-port-sight-glass-bushing-for-gmv80704bxba-b1392139","provider":"National HVAC Parts","version":"1.0","type":"link"}