O-Ring And Refrigerant Connection

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Former & New Refrigerant Connections

Courtesy of NISSAN MOTOR CO., U.S.A.

CAUTION: The new and former refrigerant connections use different O-ring configurations. Do not confuse O-rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant will leak at, or around, the connection.