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The Goodman B9102097 is a genuine OEM liquid line service cap supplied with a factory O-ring seal, designed for the WAHMS3030P4ACA air handler and compatible Goodman/Amana coil assemblies. This cap seals the liquid line service port, preventing refrigerant loss and keeping moisture and contaminants out of the sealed system. The included O-ring delivers a reliable leak-tight connection rated for system operating pressures.
The OEM B9102097 ships with the correct thread pitch and a pressure-rated O-ring sized for the exact port — generic caps frequently use mismatched O-rings that weep refrigerant over time. Choosing the factory part ensures a proper seal the first time and protects warranty coverage on the sealed system.
Easy. A quick 5–10 minute replacement for any technician. Because it seals a refrigerant port, installation should be performed by an EPA-certified HVAC professional to verify the seal and confirm there is no refrigerant leak after torquing.