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The genuine OEM Goodman 10254303 rubber coupling provides a flexible, leak-tight connection in the condensate and drain plumbing of the Amana AMH950703BXAC high-efficiency gas furnace and compatible Goodman/Amana condensing models. On 90%+ AFUE furnaces, the secondary heat exchanger produces acidic condensate that must drain reliably — this molded coupling joins drain and trap components while absorbing minor vibration and maintaining a positive seal against water and flue-gas leakage.
Generic couplings often use the wrong inner diameter or a rubber compound that hardens and cracks when exposed to acidic condensate, leading to slow drips, water damage, and nuisance pressure-switch lockouts. The OEM 10254303 is sized to the exact factory port dimensions and formulated for condensate service, so it seals the first time and holds up over the life of the furnace.
Rated Very Easy (1/5). Loosen the clamp(s), slide off the old coupling, fit the new 10254303, and re-tighten. No tools beyond a nut driver or pliers are typically required. Verify the drain runs freely and the trap holds water after installation.