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The Goodman B9102097 is a genuine OEM liquid line service cap, supplied with its sealing O-ring, for the WPH4336AMAA packaged unit and compatible Goodman/Amana equipment. This cap threads over the liquid line service port and provides the secondary, positive seal that keeps refrigerant contained between service visits. The included O-ring is the primary sealing surface — a missing, dried, or damaged cap and O-ring is a frequent cause of slow refrigerant leaks that show up as reduced cooling months later.
The OEM B9102097 matches the port thread pitch and O-ring groove exactly, guaranteeing a leak-tight seal at rated system pressures. Generic caps may fit loosely or use an O-ring of the wrong size or compound, risking slow leaks. OEM ensures a proper, long-term seal.
Easy — hand-tighten the cap over a clean, lightly oiled O-ring after any service. No brazing required. Ensure the port core is properly seated first and verify with a leak detector.