{"product_id":"oem-goodman-view-port-bushing-sight-glass-grommet-for-gmpn040-3-b1392139","title":"OEM Goodman View Port Bushing Sight-Glass Grommet for GMPN040-3 — B1392139","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1392139 View Port Bushing\u003c\/strong\u003e is a genuine OEM sight-glass grommet for \u003cstrong\u003eGMPN040-3\u003c\/strong\u003e gas furnaces. This small bushing seals the burner-compartment observation port, letting technicians view the flame while keeping the combustion area properly sealed. Though inexpensive, a missing or cracked view-port bushing can allow air leakage that affects draft and flame stability.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1392139\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e View port bushing \/ sight-glass grommet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Seals burner observation window\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-temperature grommet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMPN040-3 gas furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana (Daikin)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is a molded-to-fit OEM part sized to the exact port opening on your furnace panel. Aftermarket grommets rarely match the diameter and can leak or fall out. At this price, genuine Goodman is the obvious pick.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eVery Easy (1\/5).\u003c\/strong\u003e Press the bushing into the view-port opening by hand — no tools required. Disconnect power before opening the burner compartment.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058141643123,"sku":"GOODMAN-B1392139","price":0.85,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-view-port-bushing-sight-glass-grommet-for-gmpn040-3-b1392139","provider":"National HVAC Parts","version":"1.0","type":"link"}