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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing component for the Goodman GCH950703BXAC high-efficiency gas furnace. This flexible coupling joins condensate/drain and internal tubing connections, creating a leak-tight, vibration-absorbing seal that keeps water and combustion by-products routed correctly. Over time rubber couplings harden, crack, or take a set, leading to condensate leaks and water damage inside the furnace cabinet — making this an inexpensive but important maintenance part.
The genuine 10254303 is molded to the exact inside diameter and durometer needed for a slip-fit, leak-free seal. Generic couplings frequently differ in bore size or wall thickness, causing weeping joints or loose connections. At this price point, OEM is the obvious choice.
Easy (1/5). Slip the coupling onto the connection and secure any factory clamp. No tools required beyond a screwdriver for the clamp. Power the furnace down first and confirm no leaks on restart.