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The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM sealing fitting designed for the WAHMS1824P4ACA air handler. It caps the liquid line service port and uses an integrated O-ring to maintain a leak-tight refrigerant seal, protecting system charge and preventing moisture intrusion during shipping, storage, and service.
A worn or missing cap O-ring is a common source of slow refrigerant loss. Replacing it with the correct OEM part restores a positive seal and keeps your system operating at rated efficiency.
This is a genuine Goodman OEM fitting machined to factory tolerances with the correct O-ring durometer and seat geometry. Generic caps may not seat fully or may use incompatible O-ring material that degrades with refrigerant exposure, leading to slow leaks. For a guaranteed seal, OEM is the safe choice.
Easy — Hand-tighten then snug with a wrench to spec. EPA Section 608 certification is required to access refrigerant lines. Always recover or isolate refrigerant per EPA guidelines before servicing.