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The Goodman 10254303 Rubber Coupling is a genuine OEM connector/seal used in the condensate and drain plumbing of the AMS951155DXAB high-efficiency furnace and compatible Goodman/Amana models. This flexible molded coupling joins drain and vent components with a leak-tight seal, absorbing minor vibration and thermal movement while keeping condensate contained. Cracked, hardened, or leaking couplings are a common cause of water under the furnace — replacing this inexpensive part prevents drip damage and drain faults.
This factory-genuine coupling is molded to the exact diameter and durometer of the original, so it seats fully and seals without clamps fighting the fit. Generic rubber may be over- or undersized, leading to slow leaks. At this price, OEM is the obvious pick.
Very Easy (1/5) — Slip-fit replacement; power-down not strictly required but recommended. Inspect mating drain fittings and clear any sludge while the coupling is off.