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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing component for the WGFM295115V5DAA high-efficiency gas furnace. This flexible coupling joins condensate drain or vent sections and forms a tight, vibration-tolerant seal that keeps water and combustion gases contained. Small as it is, a hardened or split coupling is a frequent source of nuisance condensate leaks and pressure-switch faults.
This OEM coupling is molded to the precise inside diameter and durometer Goodman specifies, so it slips on snug and seals without over-tightening. Generic couplings often run slightly off-size, leading to weeping joints or splits under the acidic condensate found in condensing furnaces. For a couple of dollars, the genuine part is the smart insurance against water damage.
Power down the furnace, loosen the clamps, slide off the old coupling, and fit the replacement — securing both clamps evenly. The swap takes just a few minutes with a nut driver or screwdriver. Run the furnace and confirm the joint is dry before closing up.
Keep your condensate and vent connections tight with the authentic Goodman 10254303 rubber coupling.