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The Goodman 20171701 Condensate Drain Trap is a genuine OEM component for the WGFM195070S4CAC high-efficiency (condensing) gas furnace. The trap routes acidic condensate away from the secondary heat exchanger and inducer while maintaining the pressure seal the furnace needs to operate. A cracked, clogged, or misfitted trap causes water leaks, pressure switch faults, and lockouts — this factory part restores correct drainage and sealing.
The OEM trap matches Goodman's exact port sizes, orientation, and seal design so it mates cleanly to the factory hoses. Generic traps often require adapters, leak at mismatched fittings, or fail to hold the pressure seal — triggering pressure switch errors. For a condensing furnace, the genuine part avoids recurring nuisance faults.
Moderate (3/5). Power off, disconnect the condensate hoses, remove the old trap, and install the new one — priming it with water before startup. Confirm all hose connections are tight and the trap drains freely to prevent pressure faults.