OEM Goodman Liquid Line Cap with O-Ring for WGPH4543AMAA — B9102097
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The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM service-port cap for the WGPH4543AMAA packaged air conditioner. This brass cap threads onto the liquid-line service valve and, together with its captive O-ring, provides the secondary leak-tight seal that backs up the valve core. Because it is a sealing component on the high-pressure liquid line, a worn or missing O-ring cap is a common slow-leak culprit that drains charge over a season.
- OEM Part Number: B9102097
- Fits Model: WGPH4543AMAA
- Includes: Service cap + O-ring seal
- Function: Leak-tight closure for the liquid-line service port
- Brand: Goodman (genuine OEM)
OEM vs. Generic: The OEM cap arrives with the correct durometer O-ring and matching thread pitch, so it seals on the first turn. Generic caps frequently ship without an O-ring or with the wrong size, leaving you chasing a phantom refrigerant leak. The bundled seal makes the OEM part the reliable pick.
Install Difficulty: Easy (1 of 5). With the system at rest, thread the cap on hand-tight plus a quarter turn with a wrench. No refrigerant recovery is needed to swap the cap itself — but always wear eye protection when working near pressurized lines.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days