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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing coupling for the AMS950904CXA high-efficiency furnace. It joins condensate-drain or trap sections with a flexible, leak-tight connection that absorbs slight misalignment and vibration. In a condensing furnace, this small part does an important job: keeping acidic condensate inside the drain path and off the burner box, blower, and control board.
A universal rubber coupling from the hardware store is rarely sized to the furnace's exact fitting diameters and can weep condensate or slip loose over time. This genuine Goodman OEM coupling matches the factory outside diameters and durometer for a secure, drip-free seal that lasts.
Easy (1/5). Loosen the clamp(s), slide off the old coupling, and press the replacement into place — usually under 10 minutes with a nut driver or screwdriver. Inspect the drain trap for sludge while you're in there, then run the furnace and confirm no leaks at the joint.
Verify 10254303 against your unit before ordering.