{"product_id":"oem-goodman-sight-glass-view-port-bushing-for-gmpn100-4-b1392139","title":"OEM Goodman Sight Glass View Port Bushing for GMPN100-4 — B1392139","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1392139 View Port Bushing\u003c\/strong\u003e is a genuine OEM sight-glass fitting for the \u003cstrong\u003eGMPN100-4\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This small bushing seats in the burner-compartment access opening, providing a clean, sealed window so you can safely observe the burner flame during operation without opening the cabinet. Though inexpensive, it maintains the compartment seal and keeps the viewing port intact.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1392139\u003c\/li\u003e\n\u003cli\u003eType: View port \/ sight-glass bushing (grommet)\u003c\/li\u003e\n\u003cli\u003eFunction: Seals and frames the flame-inspection viewing hole\u003c\/li\u003e\n\u003cli\u003eMaterial: Heat-resistant molded bushing\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMPN100-4 furnace and cross-compatible models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e bushing is molded to the exact port diameter for a snug, rattle-free press fit. Generic grommets rarely match the opening precisely and can fall out or fail to seal. At this price point, the genuine part is the obvious choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eVery Easy (1 of 5)\u003c\/strong\u003e — With the furnace off, press the old bushing out and snap the new one into the port opening by hand. No tools required. This is a common add-on when servicing the burner assembly.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058150162803,"sku":"GOODMAN-12098","price":0.85,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-sight-glass-view-port-bushing-for-gmpn100-4-b1392139","provider":"National HVAC Parts","version":"1.0","type":"link"}