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The Goodman B1392139 View Port Bushing is a genuine OEM grommet engineered for the Goodman ACVM970603BNBA furnace and compatible Goodman/Amana models. It seats the combustion-chamber sight glass (view port), sealing the opening against air leaks while letting technicians safely observe the burner flame during diagnostics.
A genuine Goodman OEM bushing is rated for sustained combustion-chamber heat and holds a tight seal. Generic grommets often harden, shrink, or fall out under heat, allowing flue-gas leaks and failed inspections. OEM is the safe, code-correct choice.
Easy — press-fit into the view-port opening by hand. No tools required. Disconnect power and let the furnace cool before servicing.
Genuine Goodman parts, shipped fast by National HVAC Parts.