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The Goodman B1392139 View Port Bushing is a genuine OEM grommet that seats around the flame-observation sight port on the Goodman ACVC80603BXCA 80% AFUE two-stage furnace. It seals the inspection opening on the burner/heat-exchanger compartment, letting a technician watch the burner flame while keeping the combustion area properly closed off. A missing, hardened, or torn bushing can allow air leakage around the port and make flame inspection difficult.
Because this is a precise sealing component, the OEM Goodman bushing is sized to the exact port diameter and built from a compound rated for the temperatures near the burner box. Generic grommets may not seal flush or may degrade quickly under heat. The OEM part installs in seconds and restores a clean factory seal.
Difficulty: Easy. This is a snap-in replacement — remove the old bushing and press the new one into the port opening by hand. No tools required and typically under 5 minutes. Disconnect furnace power before opening any access panel.