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

Scope of delivery:
- Closed pop-off valve

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Suitable for:
- 聽all聽vehicles with mass air flow sensor e.g. 1.8T, VR6, R32 etc.

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Various spring strengths for the blow-off valve.
- Built-in spring: Charging pressures from 0.7 - 1.5 bar
- Red spring: Charging pressures up to 0.7 bar
- Yellow spring: Charging pressures from 1.5 bar

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