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The Goodman 10254303 is a genuine OEM rubber coupling used on the GMH950704CXAE 95% AFUE condensing furnace. It provides a flexible, leak-tight connection in the condensate drain and collector-box plumbing, absorbing vibration while sealing against the low-pressure water and flue-gas condensate typical of high-efficiency furnaces. A cracked or hardened coupling is a common cause of condensate leaks and pressure-switch faults, so replacing it with the correct OEM part restores a proper seal.
Generic couplings often differ slightly in inside diameter or durometer, leading to weeping joints or slip-offs under thermal cycling. This OEM 10254303 matches the original fit and rubber compound for a dependable, drip-free seal.
Rating: Very Easy (1 of 5). Slide off the old coupling, seat the new one, and secure any clamps. No tools beyond a nut driver; disconnect power before servicing the furnace.