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The Goodman 10254303 Rubber Coupling is a genuine OEM connector for the AMVM960805CXAA gas furnace and compatible Goodman & Amana models. This flexible rubber coupling joins two sections of drain or vent tubing, forming a watertight, vibration-tolerant connection in the furnace's condensate management system. Over time the original rubber can harden and crack, leading to slow condensate leaks that pool inside the cabinet or trip the safety float switch.
The OEM coupling is molded to the precise inside diameter and wall thickness this furnace requires, so it seats fully and seals without added clamps or sealant. Generic couplings that are slightly off-size tend to weep at the joint or slip loose under thermal cycling. For a leak-free drain, use the genuine part.
Very Easy (1/5). Slip the old coupling off and press the new one on — typically a tool-free swap. Cut power first and check the drain path for clogs while you are in there. A great low-cost preventative replacement.