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The Goodman 10254303 is a genuine OEM rubber coupling used on the GKS90704CXAB high-efficiency gas furnace. This flexible coupling creates a leak-tight, vibration-dampening connection between tubing and drainage or inducer components, helping maintain proper condensate flow and pressure integrity. Over time, rubber couplings can dry out, crack, or lose their seal — leading to condensate leaks, pressure-switch faults, or nuisance shutdowns. Replacing it with the correct OEM part restores a reliable seal.
OEM couplings are molded to the exact inside diameter and durometer required for a proper seal on Goodman assemblies. Generic rubber couplings may not seat correctly, causing slow leaks or blow-off under pressure. For a low-cost sealing part, using the correct OEM component avoids repeat service calls.
Very Easy (1 of 5) — Slip the old coupling off, clean the fittings, and press the new one into place (secure clamps if used). Typical time: under 10 minutes.