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The Goodman 10254303 Rubber Coupling is a genuine OEM condensate/drain sealing coupling engineered for the Goodman WFD195090S5DAB gas furnace and compatible S-series models. When the original coupling hardens, cracks, or begins to weep at the drain connection, this direct-fit replacement restores a watertight seal and prevents condensate leaks that can trigger nuisance lockouts or water damage around the furnace cabinet.
OEM vs. Generic: Genuine OEM rubber is molded to the exact durometer and inside diameter of the factory part, so it seats without gaps and holds up to years of acidic condensate. Universal aftermarket couplings often use softer rubber that swells or loosens, leading to slow leaks. For a sealing part this small and inexpensive, OEM is the safe choice.
Install Difficulty: Easy (1/5). Slip the old coupling off, push the new one on, and secure the clamp. No tools beyond a screwdriver or nut driver required — a typical 5-minute job.