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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing connector for the GMH950703BXAD high-efficiency gas furnace and related Goodman 96% AFUE models. This flexible coupling joins vent, inducer, or condensate tubing sections and forms an airtight, vibration-dampening seal. A hardened, split, or slipped coupling can trigger pressure-switch faults, flue-gas leakage, or condensate seepage — making it a small but critical part of the sealed-combustion path.
The OEM 10254303 is molded to the precise inner diameter and durometer needed to seal this furnace's tubing without over-clamping or air bypass. Generic hose or automotive-grade couplings may not tolerate the sustained heat and condensate exposure, leading to premature cracking. Genuine Goodman ensures a lasting, code-compliant seal.
Easy (1/5). Slip-fit with hose clamps; usually under 10 minutes. Power down the furnace, seat the coupling fully on both ports, and check for a snug, leak-free connection before restarting.