ECS atmospheric diverter valve spacer (red) for the VW/Audi MK7/8V 2.0T. Machined from anodized 6061-T6 aluminum with radial vent slots, it lets the factory diverter valve vent boost pressure to atmosphere instead of recirculating it - giving the classic blow-off "pssht" sound on gear changes and throttle lift without triggering a check-engine light.

Fitment: VW/Audi EA888 Gen3 2.0T TSI models - MK7 Golf GTI/Golf R, 8V A3/S3/TT.