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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing component for the AMVC950704CXAE high-efficiency condensing furnace. In 95% AFUE furnaces, flue gases cool enough to produce acidic condensate that must be routed away through the drain system. This flexible rubber coupling creates a tight, vibration-tolerant seal between drain and trap fittings, preventing water leaks and combustion-gas escape at the joint.
The OEM 10254303 is molded to the exact inner and outer diameters of the AMVC950704CXAE drain fittings. Generic couplings that are close-but-not-exact tend to weep, slip, or harden prematurely against acidic condensate. OEM rubber compound and dimensions ensure a lasting, leak-free seal.
Rating: Easy (1/5). A quick 5–10 minute press-fit or clamp-on replacement — no tools beyond a nut driver for hose clamps. Wipe fittings clean, seat the coupling fully, and run a heating cycle to confirm no drips. An ideal preventive part to keep on hand.