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Part #10254303 is a factory-original rubber coupling for the Goodman/Amana AMVC950453BXAB variable-speed condensing gas furnace and compatible AMVC95 series units. This flexible coupling joins condensate/drain lines or vent components, providing a leak-tight, vibration-absorbing seal between sections. In a high-efficiency furnace that continuously produces condensate, a hardened or split coupling leads to water leaks, corrosion, and pressure-switch faults — making this inexpensive part an important piece of reliable operation.
A generic coupling that is even slightly off in diameter or wall thickness will weep condensate or slip under vibration. This genuine OEM coupling is sized to the factory connection points for a secure, lasting seal — cheap insurance against water damage inside the furnace cabinet.
Easy (1/5) — A simple 5–10 minute job. Power down the furnace, loosen the clamps, slide off the old coupling, seat the new one, and re-tighten. No special tools needed. Inspect adjacent hoses for cracking while you're in there.