Replacement Bypass valve Seat Alhambra I 1.8T

Strengthened bypass valve (only for petrol engines) to replace VAG and Saab factory valve. Make sure your car is in the list above Compressor bypass valve, anti-surge valve, or recirculating valve. Bypass valve serves the same function as a blow-off-valve, but recirculates the vented air back to the compressor inlet, rather than to the atmosphere as with a BOV.