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The Goodman 0161F00046 is a genuine OEM condensate drain trap made as a direct-fit replacement for the Amana/Goodman AMSS920804CNAA high-efficiency gas furnace. The trap maintains a water seal that lets acidic condensate drain away from the collector box and inducer while blocking flue gases and combustion air from escaping through the drain line.
The OEM 0161F00046 matches the factory port diameters and float/seal geometry so condensate drains freely without pressure switch faults. Generic traps may fit loosely and cause nuisance lockouts; for reliable high-efficiency drainage, OEM is the safer choice.
Disconnect the drain hoses, swap the trap, and prime it with water before startup. Clear any blockage in the lines while access is open. A straightforward job for techs and mechanically inclined homeowners; power off before servicing.