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The Goodman 0154A00000BL Drain Pan Gasket is a genuine OEM sealing gasket designed for the ARPF486016AB air handler and compatible Goodman/Amana coil assemblies. It forms a watertight seal between the drain pan and the housing or drain fitting, preventing condensate from bypassing the pan and leaking into the cabinet or onto the structure below. A flattened, brittle, or missing gasket is a common cause of mysterious water leaks — installing the correct OEM gasket restores a clean, positive seal.
The genuine gasket is die-cut to the exact pan profile and thickness, compressing evenly to seal without gaps. Generic foam or field-cut substitutes often leave channels that allow weeping or compress unevenly. For a low-cost part that prevents water damage, OEM is the smart choice.
Simple replacement — remove the old gasket, clean the mating surface, and seat the new gasket before reinstalling the pan. Takes only a few minutes with no special tools, though access may require partial coil/pan removal.