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The Goodman 0161F00046 condensate drain trap is a genuine OEM part for the AMES920805CNAA high-efficiency gas furnace and compatible Goodman/Amana models. In a condensing furnace, the drain trap maintains a water seal that lets condensate drain away while blocking flue gases from escaping through the drain line. A cracked or clogged trap is a leading cause of water leaks, pressure-switch lockouts, and error codes on 90%+ AFUE furnaces.
OEM vs. Generic: The OEM 0161F00046 matches the original port sizes and internal trap geometry so it seals correctly and clears the pressure switch. Generic traps often use different barb diameters or trap depths, causing leaks or nuisance lockouts. We recommend OEM for reliable condensate handling.
Install difficulty: Easy (2/5) — disconnect drain tubing, swap the trap, prime with water, and verify no leaks. Confirm the pressure switch clears on restart.