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The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM sealing fitting for ARPF363616CA air handlers. It caps the liquid line service connection and uses a pre-installed O-ring to create a leak-tight, refrigerant-rated seal during shipping, storage, and service. A worn, missing, or dried-out O-ring is a common source of slow refrigerant loss — replacing this small part restores a proper seal at a fraction of the cost of a recharge service call.
This authentic Goodman OEM cap ships with the correct O-ring durometer and thread/flare match. Generic caps may use the wrong O-ring compound, which can swell or harden against refrigerant and leak. For a sealing component this critical, OEM is the safe choice.
Easy — a quick hand-tight or light-wrench replacement, typically under 10 minutes. Always reclaim or isolate refrigerant per EPA guidelines before opening the system.