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The Goodman 10254303 Rubber Coupling is a genuine OEM connector used to join drain, condensate, or vent components on the Goodman GCH950453BXAB furnace and compatible models. Molded from durable, heat- and moisture-resistant rubber, it forms a leak-tight seal that keeps condensate and combustion byproducts routed exactly where they belong. Over time, original couplings can harden, crack, or lose their grip — replacing them restores a clean, secure connection.
The factory Goodman coupling is sized to the exact diameter and durometer required for a proper seal. Generic rubber couplings often fit loosely or degrade quickly, leading to condensate leaks and water damage. The OEM part guarantees the correct fit the first time.
Difficulty: Easy (1/5). Slide off the old coupling, position the new one, and secure the clamps — typically a 5–10 minute job. Shut off power before servicing and confirm no leaks after restarting.