Pop-off piston valve aluminum for 1.8T and other turbo vehicles, black, 25mm connection

- Closed pop-off valve

Suitable for:

- All vehicles equipped with a mass airflow sensor, e.g. 1.8T, VR6, R32, etc.

Different spring strengths for the blow-off valve.

- Installed spring: Boost pressures of 0.7 - 1.5 bar

- Red spring: Boost pressures up to 0.7 bar

- Yellow spring: Boost pressures from 1.5 bar

The washers are only necessary for use with higher boost pressures.