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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing component for the AMH950453BXAB 95% AFUE condensing furnace. It provides a flexible, leak-tight connection between drain, condensate, or trap fittings, absorbing minor misalignment and thermal movement while keeping the joint watertight. On a condensing furnace the drain system runs constantly during heating, so a sound coupling here prevents cabinet corrosion, water damage, and pressure-switch faults from a backed-up trap.
Hardware-store couplings vary in inside diameter and rubber compound, and an imperfect fit weeps slowly — often unnoticed until it causes a rust stain or a nuisance lockout. The OEM 10254303 is molded to the exact dimension for this furnace's fittings, giving a reliable seal the first time. At this price, OEM is the clear choice.
Easy. Slip-fit or clamp-secured replacement requiring no tools beyond a screwdriver for the hose clamp, if used. Ensure the mating surfaces are clean and dry, seat the coupling fully, and run the furnace through a heating cycle to confirm the drain path is leak-free.