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The Goodman 10254303 is a genuine OEM rubber coupling used to join and seal condensate/drain and induced-draft connections on AMS950905DXA high-efficiency furnaces and related Goodman/Amana models. In a 96% AFUE furnace the secondary heat exchanger produces acidic condensate, so a properly sealed coupling is essential to prevent slow drain leaks, water damage to the control area, and pressure-switch nuisance trips caused by air ingress. This exact-fit rubber part restores a factory-tight seal that hardened or cracked aftermarket couplings cannot guarantee.
OEM couplings are molded to the precise inner and outer diameters of your furnace's fittings, giving a slip-on interference fit that seals without adhesives. Generic hose or automotive couplings are often the wrong durometer or bore and will weep condensate over time. For a lasting, drip-free seal, use the factory part.
Very Easy (1/5). Power down the furnace, slide off the old coupling (loosen the clamp if fitted), press the new one fully onto both fittings, and re-secure the clamp. Under 10 minutes. Run a heat cycle afterward and check for drips.