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The Goodman 20214203 is a genuine OEM condensate drain angle engineered for the GMV90905CXBA 90%+ AFUE high-efficiency gas furnace. This molded drain fitting routes acidic condensate away from the secondary heat exchanger and collector box to the drain trap, protecting internal components from corrosion and water damage. A cracked, warped, or clogged drain angle is one of the most common causes of pressure-switch lockouts and water leaks in condensing furnaces.
Genuine OEM drain angles are molded to Goodman's exact port geometry and seal against the collector box without leaks. Universal or generic fittings frequently require adapters, are prone to hairline cracks from acidic condensate, and can trigger nuisance pressure-switch faults. For a condensing furnace, the OEM part is the reliable choice.
A basic repair suited to homeowners and technicians. Power off the furnace, disconnect the condensate line, remove the old drain angle, seat the new part, and reconnect. Always confirm the condensate trap is clear and test for leaks after installation.