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The genuine Goodman B9102097 Liquid Line Cap with O-Ring is a factory replacement service-port cap engineered for the Goodman WGHP4660AAE air conditioner. This brass cap and its captive O-ring seal the liquid line service valve, preventing refrigerant leakage and keeping moisture and contaminants out of the sealed system. A worn, missing, or improperly sealing cap is one of the most common causes of slow refrigerant loss, so replacing it during any service call is cheap insurance against a costly repeat visit.
The OEM Goodman B9102097 arrives with a factory-spec O-ring and thread pitch that match the WGHP4660AAE service valve exactly, ensuring a guaranteed seal on the first turn. Generic universal caps may use the wrong O-ring durometer or a slightly off thread, leading to weeping joints and repeat refrigerant top-offs. For a sealed-system component, the OEM part is the safe choice.
Easy (1 of 5) — Hand-tighten onto the service port, then snug with a wrench. No refrigerant recovery or special tools required for the cap itself.
Backed by our OEM fit guarantee and same-day shipping on in-stock orders.