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The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM service fitting for the APH1560M41AA heat pump. This sealing cap protects the liquid line service port from contamination and refrigerant loss between service intervals. The included O-ring provides a leak-tight seal rated for system operating pressures, guarding against slow refrigerant leaks that degrade cooling and heating performance over time.
The OEM cap is machined to factory thread pitch and paired with a correctly durometer-rated O-ring for a certain seal. Generic caps often ship without the matched O-ring or use a lower-grade elastomer that hardens and leaks. On a pressurized refrigerant line, a proper seal is non-negotiable.
Easy. Hand-thread the cap onto the service port and snug per spec. A licensed technician should handle any port that requires refrigerant recovery.