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The Goodman 10254303 is a genuine OEM rubber coupling used to join and seal tubing connections — commonly on the condensate drain, trap, or inducer/vent path — in the GMH950703BXAG 95% AFUE furnace and related Goodman/Amana models. In condensing furnaces, a sound coupling keeps condensate flowing to the drain and prevents leaks that can trigger pressure-switch faults, corrosion, or water damage. Rubber components harden and crack with age and heat, so replacing a deteriorated coupling restores a reliable, leak-free seal.
Although inexpensive, coupling dimensions and durometer matter — an ill-fitting generic hose or coupling can leak or slip under thermal cycling and condensate flow. This genuine Goodman part matches the original inner diameter and material spec for a snug, lasting seal, and is secured with the factory clamp arrangement.
Rating: Easy. Loosen the retaining clamp(s), slide off the old coupling, and fit the replacement, then re-secure the clamps. Shut off power before servicing and check for leaks by running the furnace through a heating cycle afterward. No special tools required.