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The Goodman 10254303 is an OEM rubber coupling used on the WGFM295070V4CAB high-efficiency condensing gas furnace. Flexible couplings like this join and seal condensate drain lines, trap fittings, or inducer/vent connections, absorbing vibration while keeping the acidic condensate and flue gases sealed inside the drainage path. A cracked or hardened coupling leads to water leaks, drain-switch faults, and lockouts.
This genuine OEM Goodman coupling is molded to the exact inside diameter and durometer for a leak-free fit on your furnace's fittings. Generic hardware-store couplings may be the wrong bore or a lower-grade rubber that degrades quickly in acidic condensate, causing recurring leaks. For a component that lives in a wet, corrosive environment, OEM is the durable choice.
Very Easy (1/5). Power down the furnace, slip the old coupling off the fitting (loosen the clamp if present), press the new one on, and re-secure. Under 10 minutes with no special tools. Check for leaks by running a small amount of water through the drain after installation.