OEM Goodman Liquid Line Cap w/ O-Ring for WAHMS1931P4ACA — B9102097

The Goodman B9102097 Liquid Line Cap with O-Ring is a genuine OEM sealing cap for the liquid-line service connection on WAHMS1931P4ACA air handlers and compatible Goodman/Amana coils. This cap protects the refrigerant service port from dirt and moisture and provides the secondary leak seal that keeps your system holding charge. The included O-ring is the critical sealing element — a missing, dried-out, or pinched O-ring is a common source of slow refrigerant leaks.

Specifications

• Type: Liquid line service cap
• Includes: Sealing O-ring
• OEM Part Number: B9102097
• Brand: Goodman (Amana compatible)
• Equipment: Air Handler
• Fits Model: WAHMS1931P4ACA

OEM vs. Generic

This genuine OEM cap arrives with the correctly sized, refrigerant-rated O-ring already matched to the port threads. Generic caps and loose O-rings are frequently the wrong durometer or diameter, which can extrude under pressure and leak. For a guaranteed refrigerant-tight seal, use the OEM B9102097.

Installation Difficulty

Easy (1/5). Seat the O-ring, hand-thread the cap onto the service port, and snug it with a wrench to the specified torque — no recovery or recharge is required for the cap itself. Always confirm the system is sealed and leak-checked. Takes only a few minutes.