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The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM refrigeration fitting engineered for the Goodman WPH4360AHBB packaged unit. This cap seals the liquid line service port after charging or servicing, and the integrated O-ring provides a leak-tight seal that protects your refrigerant charge from slow loss over the life of the unit.
Because it is a factory OEM part, the threads, seat depth, and O-ring durometer match the original fitting exactly — no cross-threading, no guessing on torque, and no risk of a mismatched seal weeping refrigerant. A worn or missing cap is a common source of hard-to-find leaks, so replacing it during any service call is cheap insurance.
Generic caps often use a hardware-store O-ring that is not rated for refrigerant contact and can swell or crack, leading to intermittent leaks. This OEM B9102097 uses a refrigerant-compatible seal sized to the exact port, so it holds pressure and reseals cleanly on future service visits.
Easy (1/5). Recover or isolate pressure per manufacturer procedure, hand-thread the cap onto the service port, and snug to spec. Typical time under 5 minutes with basic hand tools. No brazing or special equipment required.