Air Condition Leak - Celsior

[eric5146]

I have a 1989 Celsior E-UCF11-AEPQK with a split airconditioning system. The system has a new compressor and has been refitted for R134A, However, under pressure it has a bad leak through what appears to be a flange at the base of a fitting which sits just in front of the fire wall on the passenger side. I dont know much about air conditioners bit I think it might be be associated with the split system - to direct flow to the rear of the vehicle. This feature apparently was not released on Australian cars. I have a digital photo of the site of the leak which I can email to anyone who thinks they might be able to help. Once I can identify the part at least I may be able to source a replacement from somewhere or get new o-ring or whatever. I am located in country WA and so cant readily visit a local Lexus dealer. Any advice would be appreciated.

Eric