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The Goodman 10254303 Rubber Coupling is a genuine OEM connector used on the GMV950704CXBA 96% AFUE condensing gas furnace. On high-efficiency furnaces, flexible rubber couplings join condensate drain lines, trap assemblies, and vent/inducer connections, providing a vibration-tolerant, watertight seal. A cracked or hardened coupling leads to condensate leaks, water damage, and pressure-switch faults — replacing it with the correct OEM part restores a reliable seal.
OEM couplings are molded to the exact inner diameter and durometer needed for a tight, lasting seal on this furnace's fittings. Off-size hardware-store couplings may slip, leak, or degrade quickly from condensate acidity. The small OEM part saves a callback.
Easy — Loosen the hose clamps, slide off the old coupling, and fit the new one. A quick DIY-friendly repair; power down the furnace first.