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The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM sealing fitting designed for the Goodman ARPF374316CA air handler. This cap seals the liquid line service connection during shipping, storage, and refrigerant charging, preventing moisture and contaminants from entering the sealed system. The included O-ring delivers a positive, leak-tight seal that protects refrigerant integrity.
The genuine Goodman OEM cap is threaded and dimensioned to match the factory liquid line port exactly, and ships with the correct durometer O-ring. Generic caps may use the wrong thread pitch or an out-of-spec O-ring that weeps refrigerant over time. For a connection you can leave under pressure without worry, use the OEM part.
Easy — Hand-thread onto the liquid line port and snug to spec. Takes under 5 minutes. Ensure the O-ring is seated and free of debris before tightening. Always relieve system pressure before removing the existing cap.