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The Goodman 10254303 Rubber Coupling is a genuine OEM sealing and vibration-isolation component for the WGFM195115S5DAD gas furnace. This molded rubber part cushions and connects furnace components — commonly the inducer/drain and pressure-switch tubing interfaces — helping maintain an airtight seal while absorbing motor and blower vibration. A cracked, hardened, or missing coupling can create air leaks that cause pressure-switch faults and nuisance lockouts, so a fresh OEM rubber coupling keeps combustion airflow sensing accurate.
The OEM 10254303 is molded to the exact inside/outside diameters and durometer Goodman specifies, so it seals correctly and resists heat aging. Generic universal grommets are inexpensive but frequently fit loose or degrade quickly, reintroducing leaks and vibration noise. For a reliable seal, the genuine part is worth the small premium.
Very Easy (1/5). No tools beyond gloves are typically required. Power down the furnace, slip the old coupling off, and press the new one firmly into place, confirming a snug, leak-free fit. About 5–10 minutes. Inspect adjacent tubing for cracks while you're in there.
Restore a tight, quiet seal with authentic Goodman components.