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The Goodman B9102097 is a genuine OEM liquid line service cap with a factory O-ring, engineered as a direct-fit replacement for the Goodman APH1536M41AA heat pump. This cap seals the liquid line service port, protecting the refrigerant charge from contamination and preventing slow leaks that rob your system of cooling capacity. The captive O-ring delivers a reliable, leak-tight seal every time the port is opened for service.
Choosing the genuine Goodman OEM B9102097 guarantees exact thread pitch and O-ring durometer, so the cap seats fully and seals on the first turn. Generic caps are cheaper up front but frequently use mismatched O-ring compounds that harden and weep, leading to slow charge loss and repeat service calls. For a component that guards your entire refrigerant charge, the OEM part is the sound long-term choice.
Rating: Easy (1/5). Recover or isolate the port per manufacturer guidance, hand-thread the cap, and snug it with a wrench. No special tools are required for the cap itself, though any port service should follow EPA handling rules. Most technicians and knowledgeable DIYers complete this in minutes.
Backed by genuine Goodman quality and fast shipping from National HVAC Parts.