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The Goodman 0154F00004 is a genuine OEM high-temperature sealing gasket for the AMH80804BNBC gas furnace and compatible Goodman/Amana models. It forms an airtight, heat-resistant seal between mating furnace components — such as the burner box, collector box, or inducer flange — preventing flue-gas leakage and maintaining the correct combustion-air and draft pressures. Original gaskets harden, crack, and compress over years of thermal cycling, so replacing the gasket whenever a sealed component is removed is standard best practice.
The genuine OEM gasket is die-cut to the exact bolt pattern and thickness of the sealing surface, ensuring even compression and a proper seal. Generic gasket sheet or rope requires cutting and can leave gaps that leak combustion products or upset pressure-switch operation. For a sealing component, exact OEM dimensions matter.
Moderate (2/5). Requires removing the sealed component, cleaning the mating surface of old gasket material, positioning the new gasket, and re-torquing fasteners evenly. Best performed by an HVAC technician who will re-check for leaks.