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The Goodman B9102097 is a genuine OEM liquid line service cap supplied with its sealing O-ring, designed for the GPC1330H21A packaged air conditioner. This cap protects the liquid line service port and forms a secondary leak-tight seal that helps keep refrigerant contained and the port free of dirt and moisture. A missing or cracked cap is a frequent source of slow refrigerant loss.
The OEM B9102097 ships with the correct durometer O-ring and exact thread pitch for a reliable, leak-free seal. Generic caps often use mismatched O-rings or threads that can cross-thread or weep refrigerant. For a dependable seal, the genuine part is worth the small premium.
Easy — Hand-thread onto the service port and snug with a wrench. A simple, fast replacement for any homeowner or technician.