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The Goodman B1392139 View Port Bushing is a genuine OEM grommet that seals the sight-glass/inspection opening on the burner compartment of Goodman ACVC81005CXBD gas furnaces. It frames the view port used to inspect the flame and burner ignition while maintaining the proper air seal of the combustion enclosure. A missing or brittle bushing can disrupt combustion-air balance and allow the port to whistle or leak.
This genuine Goodman OEM bushing is molded to the exact diameter and heat rating of the factory port. Generic grommets may not match the bore, may not be rated for the burner-area temperature, and can degrade quickly. For a small, low-cost part that protects combustion integrity, OEM is the smart choice.
Easy — a tool-free, push-in replacement that most homeowners can complete in minutes after shutting off power. Simply remove the old bushing and seat the new one in the port.