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The Goodman 10254303 is a genuine OEM rubber coupling used to create a leak-tight, flexible connection on the WGFM295070V4CAA high-efficiency gas furnace. Couplings like this join condensate and vent-side tubing, absorbing minor vibration and thermal movement while maintaining a positive seal. A cracked or hardened coupling is a common cause of nuisance water leaks and pressure-switch faults on condensing furnaces, so replacing it with the correct OEM part restores proper operation.
This is the genuine Goodman-specified coupling, engineered to the exact inner diameter and durometer of the original. Generic couplings may fit loosely or degrade faster under repeated heat cycling, leading to slow leaks. For a condensate connection you want tight the first time, the OEM part is the safe choice.
Easy (1/5) — Typically a slip-on replacement secured by hose clamps. Power off the furnace, note tubing orientation, and swap in minutes. No special tools required beyond a nut driver or screwdriver for the clamps.