The adapter is a replacement part from the case VAS6338/1 and is used to connect the various components of the air conditioning system to the air conditioning service unit.
Specifications: Aluminum 7075 / T6 with xH4, thread 5/8 "18UNF, inside 20.5mm
The relevant information on use can be found in the workshop manual for the respective vehicle.
ASE 410 023 00 000