{"product_id":"oem-goodman-view-port-bushing-grommet-for-gsms100-4-b1392139","title":"OEM Goodman View Port Bushing Grommet for GSMS100-4 — B1392139","description":"\u003ch2\u003eGoodman B1392139 View Port Bushing\u003c\/h2\u003e\u003cp\u003eThe genuine OEM Goodman B1392139 is a view-port bushing (grommet) for the Goodman GSMS100-4 gas furnace and compatible Goodman\/Amana models. This small but important component seals the flame-inspection sight port on the burner compartment, maintaining the proper combustion-air seal while still allowing a technician to visually inspect burner flames during service. A missing or degraded bushing can allow air leakage that affects flame stability and combustion efficiency.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Molded view-port bushing \/ grommet\u003c\/li\u003e\n\u003cli\u003eFunction: Seals the burner-compartment flame sight port\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GSMS100-4 and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1392139\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (genuine OEM)\u003c\/li\u003e\n\u003cli\u003eMaterial: Heat-resistant molded polymer\/rubber\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine Goodman B1392139 is sized to the exact port diameter for a tight, heat-tolerant seal. Universal grommets may not fit the port precisely or withstand nearby combustion heat, leading to air leaks or premature failure. For such an inexpensive part, the OEM piece is the sensible choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eVery Easy (1\/5).\u003c\/strong\u003e Simply press the old bushing out and snap the new one into the port opening — no tools required in most cases. A 5-minute replacement during routine furnace service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058181980531,"sku":"GOODMAN-12982","price":0.85,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-view-port-bushing-grommet-for-gsms100-4-b1392139","provider":"National HVAC Parts","version":"1.0","type":"link"}