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The Goodman 20214203 is a genuine OEM condensate drain angle fitting designed for the GKS90905DXAA gas furnace. This molded elbow directs condensate from the drain pan or trap into the drain line at the correct angle, maintaining proper flow and preventing standing water inside the cabinet. A worn, cracked, or missing angle fitting is a common cause of drain leaks and furnace lockouts on high-efficiency models.
OEM vs. Generic: The genuine Goodman 20214203 matches the exact port diameter and angle of your furnace's factory drain assembly for a leak-free press or clamp connection. Generic elbows may differ in diameter or degree of bend, forcing awkward adapters that create leak points and restrict condensate flow.
Install Difficulty: Easy (1/5). Disconnect the drain hose from each side of the old fitting, swap in the new angle, and re-secure. Verify a downhill slope so condensate drains freely. Shut off power and gas before servicing.