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The Goodman B1392139 view port bushing is a genuine OEM replacement component designed for the AMS81155CXAA gas furnace and other compatible Goodman and Amana furnace platforms. This small but essential grommet seats the sight-glass / observation port on the burner compartment, letting a technician safely view flame ignition while sealing the opening against air leakage. A cracked or missing bushing is a common cause of nuisance flame-sensing and pressure-switch faults.
This is a true Goodman OEM part, machined to the exact bore and retention geometry of the factory burner assembly. Generic aftermarket bushings often fit loosely, degrade under heat, or fail to seal — leading to intermittent furnace lockouts. Choosing OEM guarantees a proper high-temperature seal and long service life.
Easy (1/5). A no-tool press-fit replacement most homeowners can complete in minutes. Always shut off power and gas before servicing. If you are unsure, consult a licensed HVAC technician.