The sealing ring is placed in the connection of the charge air tube under the CO-poti like the original one. It fits all Corrado, Passat and Golf G60 models and the VW Polo G40.
M8 x 1.25, fits e.g. VW G60 models (MKB: PG) and many other manufacturers/models
Gasket metal version (from Y-branch to KAT) for VW Golf / Corrado G60 (MKB: PG)