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This is the factory-original Goodman/Amana 0154F00004 gasket engineered as a direct-fit seal for the AMS80604BXAD 80% AFUE multi-position gas furnace. It maintains an airtight, high-temperature seal between the burner box, heat exchanger, or flue collector so combustion gases stay contained and your furnace runs safely and efficiently. A hardened, leaking, or missing gasket is a common cause of nuisance lockouts, roll-out trips, and failed CO checks — replacing it with the correct OEM part restores a proper seal the first time.
Generic gaskets are often cut from thinner, lower-temp stock that shrinks, crushes, or blows out under repeated heating cycles — leading to gas leaks and repeat service calls. The genuine Goodman 0154F00004 is dimensionally exact and rated for furnace combustion temperatures, so it seats correctly and holds a lasting seal. For a component this critical to combustion safety, OEM is the right choice.
Moderate — 30–45 minutes. Requires shutting off gas and power, opening the burner/flue assembly, cleaning the mating surfaces, and reseating hardware to spec. If you are not comfortable working around a live gas furnace, have a licensed HVAC technician perform the replacement and verify combustion afterward.