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The Goodman 10254303 is a genuine OEM rubber coupling used in the GKS90703BXAE gas furnace and compatible Goodman/Amana 90-series models. This flexible connector joins components in the venting or inducer/condensate path, creating a sealed connection while absorbing vibration and allowing for slight thermal movement. Over time rubber couplings harden, crack, or leak—replacing this inexpensive part restores a tight, quiet seal and prevents flue or condensate leaks that can trigger pressure-switch faults.
The genuine Goodman coupling is sized to the exact inside and outside diameters of the furnace's connections, so it seats fully and seals without clamping distortion. Generic rubber couplings may be a loose or over-tight fit, leading to slow leaks. At this price point, OEM is the easy choice for a guaranteed seal.
Very Easy (1/5). Loosen the retaining clamps, slide off the old coupling, and press the replacement into place before re-tightening. No tools beyond a nut driver or screwdriver are typically required.
Always disconnect power before servicing your furnace.