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The Goodman B1392139 View Port Bushing is a genuine OEM component engineered for the AMH81155CNAB gas furnace and other compatible Goodman/Amana 80% AFUE models. This bushing seats into the burner sight-glass opening, holding the view port cover securely while sealing the combustion enclosure so you can safely observe flame ignition without air leakage.
This is a factory OEM Goodman part, molded to exact tolerances so it snaps into the burner box without gapping. Generic aftermarket bushings often run slightly out-of-round, leading to a loose fit and minor combustion-air leaks. For a small, safety-adjacent part like this, the OEM piece is the reliable choice.
Easy (1/5). A push-fit replacement requiring no tools. Cut power to the furnace, pop out the old bushing, and press the new one into place. Most homeowners can complete this in under five minutes.
All parts are sold new. Confirm your furnace model and serial number before ordering to guarantee compatibility.