{"product_id":"oem-goodman-view-port-sight-glass-bushing-for-ams80704bna-b1392139","title":"OEM Goodman View Port Sight Glass Bushing for AMS80704BNA — B1392139","description":"\u003cp\u003eGenuine OEM Goodman \u003cstrong\u003eB1392139\u003c\/strong\u003e is the view-port bushing (sight-glass grommet) used on the \u003cstrong\u003eAMS80704BNA\u003c\/strong\u003e gas furnace and many related Goodman\/Amana models. This small but important component seats in the burner-compartment access panel and holds the observation window, letting technicians safely view the burner flame and ignition sequence while maintaining a proper seal against the combustion area.\u003c\/p\u003e\u003cp\u003eA cracked, missing, or deteriorated bushing can allow the sight glass to loosen or fall out and can compromise the panel seal. Replacing it with the correct OEM part restores a clean, secure fit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e B1392139\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e View-port \/ sight-glass bushing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Retains and seals the burner observation window\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Heat-resistant molded bushing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman AMS80704BNA and compatible furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The genuine Goodman bushing is molded to the exact bore diameter and thickness of the factory access panel, so it snaps in securely and holds the sight glass without gaps. Generic grommets often fit loose or fail to withstand the compartment heat, leading to rattles or a lost window. For a proper, lasting fit, OEM is the right call.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Easy — a quick DIY replacement. With the furnace powered off, press out the old bushing, seat the new B1392139 into the panel opening, and reinstall the sight glass. No tools typically required.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057690952051,"sku":"GOODMAN-6914","price":6.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-view-port-sight-glass-bushing-for-ams80704bna-b1392139","provider":"National HVAC Parts","version":"1.0","type":"link"}