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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing component engineered for the ACV90905DXBA gas furnace and compatible Goodman/Amana models. This flexible coupling joins drain and condensate tubing inside the furnace cabinet, creating a leak-tight, vibration-dampening connection that protects the heat exchanger area and surrounding cabinet from moisture damage. A cracked or hardened coupling is one of the most common causes of nuisance condensate leaks on high-efficiency furnaces.
The OEM coupling is molded to factory durometer and dimensions for a guaranteed slip-fit seal and full furnace warranty compliance. A generic equivalent may save a few cents but can vary in inner diameter and rubber hardness, leading to slow drips or premature cracking. For a part this inexpensive and critical, OEM is the smart choice.
Easy (1/5). Power down the furnace, slide the old coupling off the drain stubs, and press the new one into place — no tools or special skills required. Most homeowners and technicians complete this in under five minutes.