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The Goodman 10254303 rubber coupling provides a flexible, leak-tight connection between condensate and venting components on the ACSH960905DXAA high-efficiency gas furnace. Over time heat cycling and condensate exposure harden and crack original couplings, causing water leaks and combustion air leaks — replacing this inexpensive part restores a proper seal.
OEM Goodman couplings are molded to the precise inner diameter and wall thickness of the factory fitting, so they slip on and clamp without gaps. Generic rubber boots are often slightly off-size, leading to slow leaks. At this price, OEM is the clear choice.
Very easy — loosen the clamp, slide off the old coupling, push on the new one and re-tighten. No tools beyond a nut driver. Power down the furnace first.