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The Goodman B9102097 is a genuine OEM liquid line service valve cap, supplied with its sealing O-ring, for the WGPH4524AMAA packaged air conditioner. The cap threads onto the liquid-side service port and provides the secondary leak seal that protects the Schrader/service valve from contamination and slow refrigerant loss. Its captive O-ring delivers a positive metal-backed seal that a finger-tight cap alone cannot.
The OEM cap matches the exact thread pitch and O-ring groove of the WGPH4524AMAA's service valve. Generic caps may share threads but use the wrong O-ring durometer or size, leading to a weeping seal. Since this part directly guards against refrigerant loss, the OEM kit is worth the small premium.
Very Easy (1/5). Hand-thread the cap onto the service port and snug it with a wrench to compress the O-ring. Under 5 minutes. No recovery needed if the valve is back-seated, but only a certified tech should service the valve itself.